What have you brewed so far? What styles do you like? If you have done nothing but extract kits, branch out a bit to extract kits with specialty grains, or partial mash kits. As for a good beer, easy ones would be cream ale, pale ale, wheat/belgian ales...again its hard to recommend a style of beer as you should make something that you enjoy, not something people tell you to enjoy. One thing I like to do is whenever I go to the store, I will buy a 6-pack of beer that I have never had before. That way I get to try all sorts of different styles, and if there is a style I like, then I start looking up recipes or kits to try.