I've been playing guitar (electric) for about 2 years now, but I've never been able to alternate pick... not even the slightest bit. Does anybody have any suggestions for learning how? Any websites, books, etc. would be a great help. Also, how long would one expect to spend on learning this technique before mastering it?
Start slowly, prctice with a metronome.

Start as slowly as you have to to get it right, then build up speed gradually.
Populus vult decipi. Decipiatur.

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It's can be a contraction and genitive case.

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If you cut down on these costs students won't learn so well, effecting the "quality"...
keep your wristand your hand loose and like frenchy said start slow