Remember to practice with your amplifier, at least occasionally, if you're going to play with one. Listen to every guitar player who comes to town. Listen and watch and ask questions at the breaks. Study with and from the best players you can find. Learn your guitar neck.
Practice chords up and down and across the neck.
Learn which scales work with what chords and when they work with them. Practice improvising, and every time you come to a longer note play all the chords you can off of that note. Conversely, when you are playing chords, be able to play a right scale off any chord. There is so much to learn that you will spend your entire life learning it. Try to learn what seems the most immediately useful first, then move on to something else.