It's been a while since my New Member post, but I am mostly a lurker and had a beginner question on the classifieds.
The rules say you need to have 25 post to sell or trade, but doesn't say anything about WTB posts.
I'm assuming this applied to WTB also, but I thought I'd just ask here to make sure I wasn't missing anything.
You cannot start a thread in the classifieds, either a WTB or WTS, until you have reached both the 25 post count (this is slightly different from making 25 posts, as some areas of the site do not contribute to post count), and the 2 months of membership.
However, if you see someone selling something you want to buy, you can reply to their classifieds thread, or send them a PM about buying whatever it is you're looking for.
I'll see if I can get the classifieds rules language updated, sorry for the confusion!