why do you need a warez version to learn? when theres a perfectly good free barely limited version. Only limit i ever hit was objects, and wished i could render higher res. So I bought

.
But plenty of stuff to learn with in the free version.
As for lack of tutorials, take a look around this very site. Many tips and tricks are all over here, just gotta search. Not many sites have tutorials up yet as its not a huge program, and tg2 is still just about to technically release. It's had many changes in the past year or so, such that some things are different with the added features. Next version out (the release hopefully that will be this month as they have set that as the goal), they have stated the user guide will be out, and you will probably start to see more tutorials come out.
But really, most tutorials and tricks are around here, kinda hidden. Many times looking at the image gallery people simply ask how it was done, and the user who posted it will usually give a quick list of important things they did to make the scene as it was.