Is there somewhere where it details the movement rules, exactly? There are times when I can't quite figure it out... I thought I understood in terms of points and terrain cost, but there are still some weird times when the other person will be able to do something I don't quite understand (like attack me) -- and I can't quite figure out why... Maybe I'm just being dense, but I thought it would be nice to be able to read the details somewhere. It doesn't seem to be covered in the online "how to play" section (at least that I can find).

The only thing you can miss is Battle Back