hey man, chatting with numerous friends as well as guildies while hunting with a level 80ish char is much more fun than hardcore training a level 110ish char lol. MUCH more fun.
you might have to activate your forum account by going into your mail box and there should be an email from the forum that asks you for activation, it might be in spam section of your email. after you've activated it, i'm sure you can make threads. BUT be careful when you make any threads, because A SH*T LOAD of forumers there are retards, and they flame you if you make a single mistake / bad topic in your thread. Also, if you want reputation on the forum (if you don't want to be called n00b on the forum that is) then take heed of this:
before you do anything, go in the forum user CP and put in your avatar, your personal info that you want to add (location, hobbies etc), and a GOOD signature (preferably with the detailed information of your different CO chars in the sig). then, try to stick with newbie subforum for a bit, helping out (or basically indirectly spam) newbs threads until you get maybe at least 50 posts. should'nt be slow. THEN you should be able to post in community subforum without being flamed / being called names.
the forum is very useful and is 1/2 as addictive as the game itself once you get into it. there are just so many other players who are pro-forumers and you can make many friends on the forums who can also help you out ingame.
peace