Yeah, there's a handful of homebrew rules and stuff you should look over before joining (<a href="http://bewaretheworms.forumotion.com/t1-rules-of-the-game" rel="nofollow">http://bewaretheworms.forumotion.com/t1-rules-of-the-game</a>).
You should make your character sheet on Mythweavers (<a href="http://www.myth-weavers.com/sheetindex.php" rel="nofollow">http://www.myth-weavers.com/sheetindex.php</a>).
And finally, Age of Worms is a premade adventure module spanning levels 1-20. The less you know about it, the better.