For a beginer, I recomend staying away from feather-legged breeds, as they tend to be more high maintenance than the bare-footed. Also, I think that bantams are easier to rake care of, as they eat less, take up less space, etc. The larger breeds are the complete opposite. The downside to bantams is that most of them do not lay as many eggs as the larger breeds and when they do, they are a lot smaller than the larger breeds eggs.
Starting off with 5 bantams will get you 15-25 eggs a week, wich is a pretty good way to go for a small hobbie farm. But it's always fun to experiement with many different breeds and seeing how many eggs they give you.
Have fun with your new chickens!
~Rio