You could use the "Chord Book" feature (does exactly what you describe) but it's implemented pretty poorly and might just seem like a hinderance rather than benefit.
Yeah, I saw that, but never actually went into it. Can you sort chords by song or something? Because learning the chords on their own doesn't really help.
I think the game is supposed to teach you the song slowly enough that it introduces the chords to you naturally, but a lot of people have problems with how quickly or slowly the game introduces things like that.
My problem is I'm at the point in the game (after like 6 songs) where it's throwing in chords and double notes and weird things in the middle of songs that I simply don't know how to do. I'm barely figuring out how to move my hands into the correct position without looking down all the time. So when the song "ranks up" in difficulty, I'm basically not able to play the song. Of course, I can't quit or lower the difficulty without just failing out... but that's like 2+ minutes of not being able to do anything.
It actually suggests trainers for parts of the song, but the gamification of training - you only get 5 "lives" to train a segment before it fails out and you have to restart and retune the guitar makes it more frustrating to train than it should be. If I just want to infinitely grind out the chorus forever and ever, at whichever difficulty I find appropriate, I should be able to. (Maybe I can and the game just isn't doing a good job exposing that)
I might have hit the same wall that made me stop playing the 360 version in terms of the gaming being a useful teaching tool. But the promise of customs and learning songs that I like is alluring enough that I might try to grind my way through the game. But I'm learning that there probably isn't a substitute for just paying someone to teach you how to play. lol