I'm left handed and play left handed (I tried right but it felt awkward). That buzzing and stuff, hitting other strings, that happens when you're just getting started *I hope*... At least I used to do it a lot, I do it a less now. ""Also, I used a racket ball to strengthen and stretch my fretting hand. It made a big difference."" <-- That sounds like a great idea. I have those V-shaped squeezing things, I use them sometimes and they help me.
*shrug*