You'll get some interesting stuff on Grantland now and again. Guys like Zach Lowe and Kirk Goldsberry will write some technically concentrated pieces, particularly if they are covering a specific playoff series. Their writing is usually more unique to particular teams and coaches, though, and limited to the NBA, so if you're looking for more of an overarching read on basketball philosophy, I'm not sure...there's probably a famous AAU coach or something who has written a tell-all on that stuff at one point or another, but I've never been good at knowing where to look.
The best way to become familiar with some of the various coaches/programs out there is to just study tape. It can be boring and at times you will question what you are doing with your life, but you'll be surprised by how much you'll learn just by watching one game and looking at every possession 2-3 times.
