To be brutally honest if education standards hadn't dropped so much in recent years, you wouldn't need a Thesaurus as these would be part of your natural vocabulary anyway. I've never touched a Thesaurus in my life.
Seeing as most kids today can't even write a sentence without resorting to txt spek, I have to give you kudos for at least attempting to expand your knowledge.
Yeah I guess it is a shame.
And mind you, I'm always expanding my knowledge. Just the other day I finished all the Biff, Chip and Kipper books.