It's a good book to dive into and get tailwheel info.
I don't know if I know you or you me, but I'm a CAF Check Pilot for a PT-26 in the Indiana Wing, and I fly a T-6 as well, AT-6D, though that's not a Wing airplane. I also do tailwheel instruction in a 7EC with a 65 hp engine (and a J-3) out of a grass strip (though we go to pavement too-it's important). You'll find the PT-26 with its wide sturdy gear to be more stable and easier than the Champ, just heavier, (but don't worry, the Champ is not tricky). I'd be happy to answer whatever questions I can, but your CFI will probably hit the high points. If not feel free to yell and I'm sure you'll get more folks with more advice than you know what to do with.
The checkout process in the PT isn't overly complicated, there is a checklist of items you have to do with your instructor, slow flight, various stalls, engine out, various takeoffs and landings, etc., and then they call a check pilot to come in and do the "check ride" over each of those maneuvers as well, to Commercial standards. Then done. The SNJ, that one you'll find a more interesting challenge--great airplane, a lot of fun!