Okay, so I have been brewing for about three months now. So I would still consider myself a true beginner. Here is my advice:
READ!READ!READ!
These forums are nice, but I still recommend reading professional literature to understand the basics. I have three different "text" books I follow as if I were in a chemistry class.
Second, as far as the beginner kits go. Go ahead and but glass. When I was looking, it was only ~$10 more for a glass carboy. Totally worth every penny. Where are you looking to buy? I was looking to shave a penny here, and grab a quarter there, but in the end I found that the shipping costs were enough to equal everything out. I ended up going local. They also gave me half off my first two ingredient kits! And they had free beer samples. It was an awesome experience. The knowledge from the shop has proven invaluable.
Finally the bottles, I HATE BOTTLING. It the worst part of the process. I have moved on to kegging. Maybe a bit prematurely. Maybe not. Anyway, I digress. With the bottles, soak them in oxiclean over night to remove labels and clean them. Then properly sanitize.
Hope this helps!