When playing the guitar, picking from the wrist vs. picking from the elbow or forearm is something that is very important to think about, especially as a beginner.
When I first started playing, I gravitated towards playing from the forearm when picking as opposed to the wrist. As a result, I found it difficult to play a lot of alternate picking exercises and it also made certain types of rhythm playing much harder then they needed to be. I continued this way for a number of years, and it wasn’t until a couple years ago that I tried to break myself of this habit. It was actually Al DiMeola who suggested in his REH instructional video to focus on playing from the wrist. And while I was watching how flawless his technique was, it really hit home with me. While I still at times get the forearm involved, I think I pretty much play from the wrist for the most part now, but only after practicing exercises very slowly and speeding them up, all while concentrating on picking from the wrist. It helped to look in the mirror and make sure that I was.
The habits you form early on will be tough to change as you play more and more. I wont say that you should do one or the...