I think no matter what bike you get you'll get on with it for learning the basics then when you get better/learn more about the sport like mark said you'll start to notice the different aspects of a bike and what you want to change. I think everyone here could help you a lot more if you answer theses... How much have you got to spend? What size wheels do you want? 20", 24", 26"? What sort of riding will you be mostly doing? Street/Natural/Shit BMX? How old are you? How tall are you? etc Have you ridden any other sort of bike sport? BMX/XC/Downhill/Jumping? Can you do anything on a bike? The main one being back hopping?