Oh and about how much to practice per day?
I don't really believe those who say 8-10 hrs per day.
Just play until you feel you've had enough. I don't really practice much anymore, these days maybe about 10-15 minutes every few days, cos I mainly record and compose rather than practice.
But during recording, I consider that to be practice too. Just play until you feel you had just about enough. Sometimes, take a week off from playing, you'll notice how much you have improved since you havent played. Your brain needs time to recuperate.
I think that's what is really important that people seem to miss.