# Nextflow Training Week **URL:** \ **Category:** Events\ **Tags:** nextflow\ **Created:** [September 11, 2025, 9:24am UTC](https://community.seqera.io/t/nextflow-training-week/2358 "2025-09-11T09:24:43Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Lizzie\_Bolitho](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/lizzie_bolitho/32/1653_2.png) [@Lizzie\_Bolitho](https://community.seqera.io/u/Lizzie_Bolitho)\ **Post date:** [September 11, 2025, 9:24am UTC](https://community.seqera.io/t/nextflow-training-week/2358/1 "2025-09-11T09:24:43Z")
> **Nextflow Training Week** > > **Starts:** September 22, 2025, 9:00am (Europe/London)\ > **Ends:** September 26, 2025, 6:00pm (Europe/London) 🚀 **Nextflow Training Week** is a quarterly self-paced online training designed for accessibility and flexibility. Featuring on-demand walkthrough videos (Hello Nextflow only) and support via office hours and the community forum, this event replaces fixed-schedule Community Trainings—allowing learners to start anytime during the week and get timely help from our staff and the global Nextflow community. This third edition will run **Sep 22-26, 2025** and is tailored for newcomers looking to get started with Nextflow. Throughout the week, participants will work through one of the courses on the [Nextflow training portal](https://training.nextflow.io/latest/? __hstc=133515217.c767bada6e433bb652a04e8ab4f85788.1755527057809.1757580956397.1757582197523.100&__ hssc=133515217.4.1757582197523&__hsfp=628944565). The course uses **GitHub Codespaces** as a free, ready-to-use training environment, eliminating the need for software installation and configuration—only a web browser and a GitHub account are required. - **Learn at your own pace** : Instructor-led videos will be available on YouTube, guiding you through key Nextflow concepts. - **Work as a group** : We encourage teams, labs, and local groups to work through the course together virtually or in person. - **Get live support** : Our staff and Nextflow Ambassadors across multiple time zones will be available to answer questions in the [community forum](https://community.seqera.io/) and on Zoom office hours. - **Certificate opportunity** : Register and complete the end-of-week Nextflow quiz to earn your official completion certificate and demonstrate your newly acquired workflow management skills. ✨ Are you ready to learn Nextflow? **[Register now](https://hubs.la/Q03HX1zm0)** ---
**Author:** ![Tejaswini\_Oak](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/tejaswini_oak/32/2033_2.png) [@Tejaswini\_Oak](https://community.seqera.io/u/Tejaswini_Oak)\ **Post date:** [September 22, 2025, 5:53am UTC](https://community.seqera.io/t/nextflow-training-week/2358/2 "2025-09-22T05:53:44Z")
Hi! I’ll be starting the Nextflow Free Online Training on 22nd September. In you last point you mentioned about completing an end-of-week quiz. Where can I find that quiz? ---
**Author:** ![Lizzie\_Bolitho](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/lizzie_bolitho/32/1653_2.png) [@Lizzie\_Bolitho](https://community.seqera.io/u/Lizzie_Bolitho)\ **Post date:** [September 22, 2025, 8:47am UTC](https://community.seqera.io/t/nextflow-training-week/2358/3 "2025-09-22T08:47:49Z")
> [@Tejaswini\_Oak](#): > > an end-of-week quiz. W Hi! Welcome to Nextflow Training Week! We will be sending out the quiz to participants at the end of the week via email. Thanks, Lizzie ---
**Author:** ![asmariyaz23](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/asmariyaz23/32/1652_2.png) [@asmariyaz23](https://community.seqera.io/u/asmariyaz23)\ **Post date:** [September 22, 2025, 2:09pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/4 "2025-09-22T14:09:36Z")
Trying to set up Github codespace, but it is stuck at a page called “Setting up your codespace“ for a long time. Is this normal? ---
**Author:** ![GeraldineVdA](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/geraldinevda/32/178_2.png) [@GeraldineVdA](https://community.seqera.io/u/GeraldineVdA)\ **Post date:** [September 22, 2025, 2:24pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/5 "2025-09-22T14:24:19Z")
Hi, it can take a few minutes but not more than that. You can try refreshing the page and see if that helps. If that still doesn’t work, please post a screenshot of what you see and we’ll try to get you through this. ---
**Author:** ![asmariyaz23](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/asmariyaz23/32/1652_2.png) [@asmariyaz23](https://community.seqera.io/u/asmariyaz23)\ **Post date:** [September 22, 2025, 2:40pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/6 "2025-09-22T14:40:59Z")
![Screenshot 2025-09-22 at 10.40.23 AM](https://europe1.discourse-cdn.com/flex013/uploads/seqera/original/2X/d/dfe180f5127530a9962c2e8c174e5782b33f37b3.png) ---
**Author:** ![adolfmukama](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/adolfmukama/32/1615_2.png) [@adolfmukama](https://community.seqera.io/u/adolfmukama)\ **Post date:** [September 22, 2025, 2:44pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/7 "2025-09-22T14:44:06Z")
You might want to try connecting through a different network. In my experience, I’ve occasionally been unable to access Codespaces on my work network, but switching to a personal network resolved the issue. ---
**Author:** ![asmariyaz23](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/asmariyaz23/32/1652_2.png) [@asmariyaz23](https://community.seqera.io/u/asmariyaz23)\ **Post date:** [September 22, 2025, 2:47pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/9 "2025-09-22T14:47:55Z")
This helped, thank you ---
**Author:** ![skose](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/skose/32/2050_2.png) [@skose](https://community.seqera.io/u/skose)\ **Post date:** [September 22, 2025, 4:12pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/10 "2025-09-22T16:12:34Z")
Hi there, I have finished the genomics training set. Will the quiz include questions from this or the first few training sets like hello-nextflow/hello-nf-core? Will the certificate dilineate which training was completed? Thanks. ---
**Author:** ![Josephine\_Ilott](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/josephine_ilott/32/1774_2.png) [@Josephine\_Ilott](https://community.seqera.io/u/Josephine_Ilott)\ **Post date:** [September 26, 2025, 10:44am UTC](https://community.seqera.io/t/nextflow-training-week/2358/11 "2025-09-26T10:44:49Z")
Hi! Thank you for this information. Might I ask when we should receive this email today or if has already been send, I don’t want to miss out! ---
**Author:** ![ninaxiong](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/ninaxiong/32/2076_2.png) [@ninaxiong](https://community.seqera.io/u/ninaxiong)\ **Post date:** [September 26, 2025, 2:07pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/12 "2025-09-26T14:07:11Z")
I also have not received an email with the quiz. Just checking whether it has already been sent! ---
**Author:** ![asmariyaz23](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/asmariyaz23/32/1652_2.png) [@asmariyaz23](https://community.seqera.io/u/asmariyaz23)\ **Post date:** [September 26, 2025, 2:26pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/13 "2025-09-26T14:26:05Z")
Hello, I have a couple of questions: 1. What is the difference between naming each module’s nextflow script as main.nf and then importing vs giving each module its own name? In the genomics module, eventually each module was segregated into its own folder with each script named “main.nf”. However, in rnaseq module I see that each file is named after the process itself (eg. fastqc.nf). Are both conventions equally used?2) 2. In rnaseq module while the reads are read in using a channel “read\_ch = channel.fromPath(params.reads)”, the index file is being simply provided as file “HISAT2\_ALIGN(TRIM\_GALORE.out.trimmed\_reads, file (params.hisat2\_index\_zip))”. Could you help me understand why both are not read in using Channel? 3. Under rnaseq/data, I don’t find the index file for the genome. Can I download it from somewhere else? ---
**Author:** ![Igiraneza\_Clement](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/igiraneza_clement/32/2073_2.png) [@Igiraneza\_Clement](https://community.seqera.io/u/Igiraneza_Clement)\ **Post date:** [September 26, 2025, 2:37pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/14 "2025-09-26T14:37:52Z")
I would like to kindly ask for how long they will remain accessible for participants to use. This would help me plan my follow-up learning and application of the tools covered. Thank you very much for your support and for organizing such an excellent training. Best regards, Igiraneza Clement ---
**Author:** ![Geraldine](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/geraldine/32/268_2.png) [@Geraldine](https://community.seqera.io/u/Geraldine)\ **Post date:** [September 26, 2025, 6:02pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/15 "2025-09-26T18:02:38Z")
Hi! We only have a quiz for Hello Nextflow; we plan to add others for our next training week in November. Everyone is welcome to take the Hello Nextflow quiz even if you did a different course, since Hello Nextflow covers the basics that everyone should know by the time they get to other courses. ---
**Author:** ![Geraldine](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/geraldine/32/268_2.png) [@Geraldine](https://community.seqera.io/u/Geraldine)\ **Post date:** [September 26, 2025, 6:03pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/16 "2025-09-26T18:03:23Z")
Hi, can you please post this question as a new topic, since that deserves a separate thread? Thank you! ---
**Author:** ![Geraldine](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/geraldine/32/268_2.png) [@Geraldine](https://community.seqera.io/u/Geraldine)\ **Post date:** [September 26, 2025, 6:04pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/17 "2025-09-26T18:04:12Z")
Hi @Igiraneza_Clement , the training materials will remain available indefinitely, you can refer back to them at any time. ---
**Author:** ![Geraldine](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/geraldine/32/268_2.png) [@Geraldine](https://community.seqera.io/u/Geraldine)\ **Post date:** [September 26, 2025, 6:05pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/18 "2025-09-26T18:05:00Z")
Hi, I believe the email with the quiz link has been sent out; let us know if you don’t get it. ---
**Author:** ![asmariyaz23](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/asmariyaz23/32/1652_2.png) [@asmariyaz23](https://community.seqera.io/u/asmariyaz23)\ **Post date:** [September 26, 2025, 6:08pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/19 "2025-09-26T18:08:21Z")
The quiz link leads to [typeform website](https://www.typeform.com/explore?utm_source=typeform.com&utm_medium=typeform&utm_content=typeform-incorrectURL&utm_campaign=viral_expt%0A%20%20%20%20) not to the actual quiz. I think there is a separate question posted on community forum as well. ---
**Author:** ![Alexander\_Nater](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/alexander_nater/32/552_2.png) [@Alexander\_Nater](https://community.seqera.io/u/Alexander_Nater)\ **Post date:** [September 26, 2025, 6:30pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/20 "2025-09-26T18:30:06Z")
1. Functionally, there is no difference. For nf-core, the standard is to have each process in its own directory with the process definition in `main.nf`. In this case, the file name can be omitted when importing. 2. When you provide Groovy values (i.e. a file object in this case) instead of channels as input for a process, Nextflow will automatically convert them to a value channel. In this case, using ```auto HISAT2_ALIGN ( TRIM_GALORE.out.trimmed_reads, Channel.value(file(params.hisat2_index_zip)) ) ``` would be fully equivalent. Important is the distinction between value and queue channels. The `trimmed_reads` channel most likely contains multiple entries which should run in separate tasks which are all using the same index file. Using a queue channel for the index file would mean that it would be consumed by the first entry of `trimmed_reads` causing the process to run only once. So using `Channel.fromPath(params.hisat2_index_zip)` would not work, as this produces a queue channel. You would need to convert it to a value channel first with e.g. Channel.fromPath(params.hisat2\_index\_zip).first() ---
**Author:** ![Igiraneza\_Clement](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/igiraneza_clement/32/2073_2.png) [@Igiraneza\_Clement](https://community.seqera.io/u/Igiraneza_Clement)\ **Post date:** [September 26, 2025, 7:48pm UTC](https://community.seqera.io/t/nextflow-training-week/2358/21 "2025-09-26T19:48:07Z")
Thank you very much [@Geraldine Van der Auwera](mailto:geraldine@seqera.io) [Next page](https://community.seqera.io/t/nextflow-training-week/2358.md?page=2)