Guitar Hero 5

After you enter GHMix mode, you will receive its menu that has each colored button on the top right. HOLD each of these buttons for a few seconds until a Help window about that function appears on the left.

Take the time to make each Help screen appear and the achievement should unlock.

you can combine several achievements in one, what's an lp, producer, no mistakes allowed, explore the studio space, box set and juke box.

go into the gh studio.
make 20 'songs', each with 1 note, short or long, doesn't matter. (producer)
meanwhile, hold down each of the fret buttons for tips. (explore the studio space)
then go to quickplay, make your setlist with the 20 songs you just made and save your list.
set your character to beginner and start playing the first list of 20 songs. (what's an lp + no mistakes allowed)
then change the setting to easy, play your list again, then medium and so on.
that's 100 songs, after changing from beginner until expert. (box set)
do this 3 times and you also get the last achievement juke box.

once you enter the GHMix mode with your guitar, pressing each of the fret buttons will each give you a different Tooltip.

Press all 5 fret buttons and the achievement will unlock automatically.