1) Toribash is awesome.
2) Posting threads is great if they benifit the designated sub-forum in which the topic belongs. If you want to talk about or share replays you should post a thread in the Replays section of the forums. If you want to buy/sell an Item from a player, you should post in the Market section of the forums.
3) Math is great, and will sometimes help you in toribash.
4) A noob in toribash is refered to as a new player, a player that doesn't know about the game, or someone with a low belt title.
5) Join a beginner server and play some matches. Try to get the hang of what the joints do and have fun.