I had some spare time, but not much, so i'm just going to make this brief:
After listening to the BetterGuitar file (Twice at night, a few times while playing a game), I noticed that within a few short days, my skill picked up a bit, I know the progress must've come from this because I was able to get the hang of a solo I could never get before (The song was by AC/DC. Back in Black).
If I have any more spare time, I'll try the file again and see what little progress I make. I'll keep you guys updated.