Hi Errandir, and welcome to the boards!
I think this is a fine place to post your questions, although others may disagree with me.
As for your question regarding ease of play for D&D novices, I really would not worry about it. If you are willing to dedicate the months (if not years) it takes to complete a game in this format, I am sure many a DM would be willing to welcome you aboard, despite your inexperience. When it comes to
PbP games, the most important player quality is a willingness to post on a regular basis. That is the only thing that has to be inherent, everything else can be taught.
Unlike face-to-face RPGs, where it is very helpful to be thoroughly aquainted with the rules so as not to bog down the game, the pace here is soooooo slow that you always have time to look stuff up. In addition, most folks around here are very helpful and will be more than willing to help out an eager D&D novice.
Again, welcome and I hope you can find what you are looking for.
BrOp