#1
switched over from playing bass to playing guitar, i played for a good 4 years, anyways
my left hand is a lot faster and a lot more...talented? i guess i don't know the word

anyways i'm having trouble with alternate picking and such, i'm very slow and inaccurate when switching strings, can someone give me some good exercises to do
#2
Check the lessons section on UG. I've seen some lessons on there for exercises and tips on alternate picking and whatnot.