Memorize the dictionary. :-)
lol thats exactly what I was thinking when I saw this question :P
Memorize all of these words:
http://homepage.ntlworld.com/adam.bozon/scrabblelists.htm
You must follow scrabble dictionary, scrabble word finder, scrabble cheat and scrabble cheats.
http://www.scrabblecheats.com/
Check it. It might help you.