take a peek here: FAQ. These FAQs will explain a lot (though not all) of the somewhat confusing things in the eye-feast of overwhelming CF thingies. You probably read the Terms of Service you agreed to when joining, but now might also be a good time to attempt to read the rules listed here: Rules.
Youll notice we have an Intro Sticky by the lovely AngelAmidala: http://www.christianforums.com/t1110956-please-read-the-rules-before-posting-thanks.html, that most forums have other Sticky introductions that can often be important to read before posting in that forum, and that some of the more popular threads have little numbers beside them (like Welcome to all new members (4)) which means theyve been continued in further incarnations after reaching a 1000 post limit for each thread.
Here are just a few forums that might be helpful in starting to explore the place. Just click on the links and find a place you like: