I am debating getting both DraftMaster and Draft Guide, but then I thought, maybe I should just get DraftMaster. What do you get with the Draft Guide that you don't get with DraftMaster? Any help would be appreciated!

Both tools are designed to prepare and execute a draft. Draft Master focusing on execution, the Draft Guide focuses on preparation. The player profiles, sleepers, over/under valued, and projections are shared between the two.

I don't really understand what draft master is either....

Draft Master is a desktop application designed to assist in preparing for your draft. To learn what it can do I would start here: http://forums.rotoworld.com/index.php?showtopic=79091