I'm critical of the "practice practice practice" advice. There's such a thing as over-practicing. A good hour a day should do it. That's plenty. I mean, practice as much as you want. If you want to do 3 hours then do 3 hours. But don't force yourself to do 3 hours. And you have to practice daily. Trying to cram 6 days worth of lessons into 8 hours the day before your next lesson doesn't cut it. And don't think your instructor can't tell the difference. He can. You're way better off doing an hour a day for a week than 8 hours the day before--it's a huge difference.

As far as lessons go, you should be learning to read music proper and not just tabs--that's bullshit. I wouldn't pay anyone to teach me tabs, for Christ's sake. You need to get to the point where you know instantly what any note is on the paper AND where that note is on the guitar AND where all octaves of that note are. You should know where every C is, for example. You should be able to name each note as you play it and you need to practice it by saying those notes aloud as you do it. Same with chords--say them out loud when you play them.

In learning to walk bass in jazz, a prerequisite is being able to name every note aloud as you play it. It's necessary to your progress to be able to do that. It's not enough to know it implicitly. And I think it's a very good idea to learn music from someone that is university educated in music. It doesn't mean they know anything necessarily but the chances are good he knows more than some dude whose musical education consists of playing in bar bands for 20 years.