I learned that if your going to teach yourself, there's a method to practicing, moreso than just sitting down and learning things...here are some tips. Allow yourself creative practice before or after your practice sessions, making up riffs, practicing a lick you learned whatever. Of course as always the key to improving in anything is repetition. Pick something you want to learn, and practice it three times a day, about ten times each each time you do. If you get tired dont force yourself, just break and come back later, and if you have the means record yourself to gauge your progress every once in awhile. The mind and fingers need breaks, so never practice two to three hours in one sitting. Make sure you play in front of people as well as in private because believe it or not you always play different in front of people. Divide your practice into scales, chords, and technique. Listen to as much music as possible of all kinds, don't just limit yourself to listening to guitarists and try to develope your own style. Techniques are just techniques, knowing how to execute them does not make it music persay. Techniques are physical devices used to express the music heard from within. The instrument used and techniques are a means to an end, they do not make the music you do.

I guess in essence irregardless of teacher you only get out of it what you put into it. The internet and forums like these are a vast resource for knowledge, don't be to shy to ask questions, and dont get discouraged.