i have posted some threads. but this site say that i don't have any posts. what that means?
Posts made in the 'General Discussions' section aren't counted in your number of posts.
so where should i post ?
Consider what forum is most appropriate for your question, and post it there. For example, if it's a CSS question, post in the CSS forum.
can i send friend request as far as possible?
You can send a friend request to anyone, yes.
Don't worry about your post count. If you participate in discussions it'll go up soon enough (unless you never venture out of the General Discussion forum ).But if you start posting just to get your post count up, you might run into warnings and infractions for fluff posting.
thanks you for advices