Re: tremelo picking
Start slow! Use strict alternate picking. Try playing just one fretted note. Pick up-down-up-down. Hold the pick at a right angle to the strings, and make sure you're holding on tight, or it's gonna go flying. Using a metronome is a good idea, too. You can start with it at about 120 bpm. Play 4 notes per click, until you have it mastered, then go to 8, then 16. Then try doing the same but moving your left hand in time. Once mastered, start increasing the tempo.