No worries!

And don't be too concerned about being knowledgeable. There's people at all skill and knowledge levels in rp. Most people I've come across in rp are really nice about answering questions and explaining things, you just have to communicate. But if you ever wanted to test the waters I'd be down to do an rp with you. 

In my experience, two person rp-ing is great for getting a feel for things with low pressure. Group rp-ing is super fun though just because of the variety of characters and writing styles you get.

I usually rp in original settings with original characters, but I started out in the Kingdom Hearts fandom!