I'm in my PPL training now and am building a Series 7 STi with my dad. My goal is to have at least 100 hours and a TW endorsement by the time we finish the build. We'll also get some instruction from a CFI who owns and flies a Kitfox. It was mentioned above about ground school not 'clicking' until training started, and that was definitely my experience. I watched all of the Sporty's classes online last year but once I started training it all made more sense.