Meta SE is for asking and answering questions about:
- Stack Exchange
- Promotions & Advertising Support,
- feature requests, or bug reports for the core Stack Exchange engine that powers all Stack Exchange websites
Basically, issues that affect the entire network of Stack Exchange sites.
A new user like yourself might have questions that you want to ask about any of this, and in that case, you are absolutely welcome to participate. You may even be able to answer questions here, but, normally1, many questions involve some sort of expertise with the SE system and how it's run.
Either way though, you are welcome to try to contribute where you can and are comfortable doing so.
What I did, and what I'd recommend other users do as well, is start by contributing and lurking on the local Meta site(s) of the SE site(s) you frequent. There you'll get a more intimate understanding of how certain sites are run and, generally, a quieter and more forgiving environment in which to learn the ropes. For one thing, child metas don't have reputation.
1 - This last month has been highly atypical.