Contribute to SageMath by answering questions
You have some expertise with SageMath.
One way to contribute is to answer other people's questions.
This page lists questions-and-answers ("Q&A") sites or mailing lists where such questions are frequently asked, and some usage tips.
Ask Sage
Our official Q&A site, powered by Askbot (an open-source engine for Q&A sites, running on top of the Python-based Django web framework).
Very well indexed by search engines.
sage-support
https://groups.google.com/forum/#!forum/sage-support
A support mailing list, powered by Google Groups.
Less visible in web search engines than Ask Sage.
Stackoverflow and Stack Exchange
Stackoverflow / Stack Exchange is a popular network of Q&A sites.
You can create an account on these sites using an email address and a password, or you can log in using Google, Facebook, etc.
Several of these sites see SageMath-related questions with some frequency.
Most will have a [sage] or [sagetex] "tag" or keyword.
(Sometimes the [sage] tag is shared with other things called Sage.)
The search box allows you to search for tags and keywords.
For example you could search [sage] polynomial to search questions or answers tagged [sage] and containing the word polynomial.
Once logged in, if you hover your mouse over the [sage] tag, a description pops up in which you can click the "star", which will subscribe you to email alerts about this tag.