Hi and

Here are some video that will teach you how to sex your snakes.

YouTube - 8 Ball Pythons - Popping Lessons

YouTube - PRO Poppin.........yeah booyeeeeeee

As far as your BP you can post a picture and we will be happy to tell you what it is

Also remember that while he might not look like the other BP you own it is most likely a normal (normal come in different shades of colors from high gold to dark brown, and also with different patterns from very busy to reduced pattern)