Nate,
Here's some suggestions in no particular order...
-- Visit William Tingle's discussion forum at
www.Sub2deals.com-- Read 5 Magic Paths by Lumley (check books here for Amazon link)
-- Buy John Locke's Sub2 manual - the access to John is worth more than the price of the course (available here or several other sites)
-- Buy Bronchick's Alternative Real Estate Financing course for additional input and forms (available here or several other sites)
-- The best course I've seen on paper is John Behle's The Paper Game 5 Day Training (available here or at
www.papergame.com)
-- For lease options, I'd recommend Bronchick's course and Joe Kaiser's course (you can contact Joe at
www.foreclosureclues.com) as they don't overlap. I've heard Claude Diamond's course (
www.claudediamond.com) is good, but I've never seen it. Also, folks usually speak highly of Lou Brown's (
www.louisbrown.com) materials.
Hope that helps...