Thank you for the compliment! I used to have a different avatar, but this one feels a lot more me, so to speak, and I am glad that I found something I am, in fact, happy with.
As for starting topics and whatnot - there is no reason to be shy or hesitant. If you want to bring something up, see if there is a thread already about it; when it comes to books, I do not think there is any harm in so-called "necroposting", (or bringing a post back from the dead) There is always someone who will want to talk about a thousand different things.
I see that you are managing just fine around here; you almost have enough posts to apply for Citizenship! That will open up many new forums to explore; one is, I'm afraid, quite limited when it comes to just being a Visitor. If you need any help with anything, by the way, or if you would just like to chat, I am an open book, as is the rest of the Welcoming Committee, and of course, the Mayor.
I am looking forward to seeing you around more!
P.S. I really like your avatar, it is such a burst of colour.