Blog post about numpy tutorials and lightweight contributing guide

.github/ISSUE_TEMPLATE/blog-post.md

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+---
+name: 📖 Blog post information
+about: Capture information we can use for a blog post
+title: "[BLOG TITLE HERE]"
+labels: ["blog"]
+assignees: []
+---
+
+<!-- Do your best to fill this out. Just bullet points is fine! -->
+
+### What happened?
+
+- This happened
+- This happened
+
+### Why should we be excited about it?
+
+- Because A
+- Because B
+
+### Where can we learn more?
+
+- Link A
+- Link B
+
+---
+
+<!-- BONUS SECTION: These are optional, but super helpful if you have time! -->
+
+### Media and images
+<!-- Drag/drop any images we can use in the post! -->
+
+
+### Acknowledgements
+<!-- Give a shout-out to any person or org that particularly helped. -->

CONTRIBUTING.md

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+# Contributing to the Jupyter Book Blog
+
+Our blog is our primary mechanism for recording what we do and the impact we've had. It also gives us a record of our work that we can quickly use for generating reports.
+
+## Principles to follow
+
+- Shorter, imperfect, and more frequent
+- If you're not sure whether it's in scope, it's probably in scope
+- Link to other places to learn more
+
+## Things to blog about
+
+- Examples of Jupyter Book having impact "in the wild"
+- Share updates of our work (this can be super small! it is more interesting than you imagine!)
+- Share learning and inspiration that's relevant to Jupyter Book
+
+## Share an idea for a blog post
+
+Anybody is encouraged to share blog post ideas! Here are some tips:
+
+- Fill out the [blog post issue template](https://github.com/jupyter-book/blog/issues/new?template=blog-post.md)
+- Fill in as much as you can but don't worry about getting it perfect!
+
+## Write a blog post
+
+Anybody is encouraged to write blog posts! Here are some tips:
+
+- Look in the [issues for our blog](https://github.com/jupyter-book/blog/issues?q=sort%3Aupdated-desc+is%3Aissue+is%3Aopen) for things you could blog about.
+- Feel free to blog about any of them!
+- Do so by adding a new markdown file to the `posts/` folder and making a Pull Request.
+- Ping the team for review and editing in Discord.

posts/2025-11-13-numpy-tutorials-jb2.md

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+---
+title: NumPy tutorials now built with Jupyter Book 2
+date: 2025-11-13
+authors:
+  - name: Jupyter Book Team
+---
+
+The [NumPy tutorials site](https://numpy.org/numpy-tutorials/) has upgraded to Jupyter Book 2! The [migration was just merged](https://github.com/numpy/numpy-tutorials/pull/274), bringing MyST-powered documentation to one of scientific Python's foundational libraries.
+
+This work came out of the [Scientific Python Developer Summit in Copenhagen](https://scientific-python.org/summits/developer/2025-nov/) in November 2025. The summit created space for NumPy contributors to share experiences with the broader ecosystem and tackle the migration as a focused, right-sized project.
+
+The NumPy tutorials maintainers agreed to migrate to JB2 because the material focuses on narrative and notebook content and [doesn't need API documentation](https://github.com/jupyter-book/mystmd/issues/1259). Seeing NumPy make this transition is a good sign that JB2 is ready for production use in major open source projects - and that JB2 can cover an even bigger chunk of use-cases once we add [API docs support](https://github.com/jupyter-book/mystmd/issues/1259).
+
+## Acknowledgments
+
+Thanks to [Brigitta Sipőcz](https://github.com/bsipocz) for leading the migration and to the NumPy team for their collaboration in making JB2 better for everyone.
+
+## Learn more
+
+- [NumPy tutorials site](https://numpy.org/numpy-tutorials/)
+- [Migration PR](https://github.com/numpy/numpy-tutorials/pull/274)
+- [Scientific Python Developer Summit](https://scientific-python.org/summits/developer/2025-nov/)