If you have specific questions, there are a lot of knowledgeable folks on here in various areas.
If you aren't even sure what to ask for questions, but want to learn more....
For malawians, this is/was one of my favorite sites. They redesigned it at some point, expanding it beyond cichlids, and now everything is hard/confusing to find, if it even exists at all. If you enter through the MCH portal, you'll know what I mean. Here's a link to the original layout/content.
http://www.malawicichlidhomepage.com/index_eng.html The
fish list is one of the best I've seen because for a lot of species there's multiple large photos, extra information, etc. There are also lots of good articles.
Cichlid room companion has the most up to date & correct info. But, it's $30/yr
^Agreed, that's one of the best references around online. They use to have more free content IIRC. I tried looking at it last night when the OP was made, but couldn't find the articles that used to be available.