Nextflow Training Week - Sep 22-26, 2025

[Lizzie_Bolitho]

Nextflow Training Week is a quarterly self-paced online training designed for accessibility and flexibility. Featuring on-demand walkthrough videos 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.

To find the schedule for upcoming Training Weeks, see the forum’s Events calendar.

Not Registered? Sign up here

Instructions for participants

1. Go to the Nextflow training portal and pick a training course. For newcomers to Nextflow, we recommend the Hello Nextflow course, followed by the Hello nf-core course if you want to take your skills one step further.

2. Follow the instructions on your chosen training course’s home page. This will involve launching a Github Codespaces cloud-hosted training environment, eliminating the need for software installation— you only need a web browser and a GitHub account (which is free). You will also find complete written instructions as well as instructor-led videos walking you through the course.

3. If you run into any trouble or have any questions, post your question in this category of the forum. We’ll have staff members as well as community members in multiple timezones standing by to answer your questions and help you keep moving through the course.

4. You can also join one of the office hours zoom calls. We’ll have staff members available to answer questions and discuss the materials over Zoom. Join the office hours at 9:00 AM EST or 4:00 PM EST. You will receive the Zoom links via email following registration.

5. Be sure to complete the quiz at the end of the course. This will not only help reinforce what you’ve learned but is also required to receive your certificate of completion.

Frequently Asked Questions

• I don’t want to wait until the next Training Week, can I already do the training course?
  Of course! Just follow the instructions 1-3 above at any time. You can even still post questions in this forum category. We may not be able to answer your questions as quickly as during a Training Week, but we’ll do our best to get you a timely answer.

• I’m an instructor or an experienced Nextflow user and I’d like to lead a group training. Can I do it as part of Training Week?
  Absolutely! That’s a great idea. If you let us know in advance, we can make sure someone is aware of your group and available to answer questions. If you’re getting together in person, we may even be able to mail you some stickers for your participants.

[opalmeira (Ondina Palmeira)]

Hi, I am training on video Part 1: Hello World. When I do the nextflow clean command I still can see the directories that I removed on the left side bar under “work”, but if I do tree work, they no longer appear on the terminal. Why does it happen like that?

[mribeirodantas (Marcel Ribeiro-Dantas)]

Hi @opalmeira,

I believe what you’re seeing is that the task folders were not removed, but the task folders’ contents were. Check the output of my tree work before and after my nextflow clean command:

Before, folders and contents.

After nextflow clean fabulous_poitras -f

Can you please confirm that’s the case?

[Sarani (Sarani Nativel-Santerne)]

Hi, first of all, thank you for this training I am connected and registered, but can’t seem to find the quizzes so far (I am doing the Hello Nextflow course). Are they at the end of each part? In the codespace?

Thanks in advance for your help!

[mribeirodantas (Marcel Ribeiro-Dantas)]

Hi @Sarani,

The quiz will be shared on Friday by e-mail with everyone who registered

This time, the quiz is solely focused on the Hello Nextflow training material.

[mribeirodantas (Marcel Ribeiro-Dantas)]

I’m locking this post to help keep the forum organized. If you have a question, please create a new topic by clicking “New Topic” on the community index page.