Skateboarding.
作者：mitchell smy-roach
1. Why are there different brands?
1.1. Best brand
1.2. First brand
1.3. Most famous one
2. How it started.
2.1. Who was the creator.
2.2. Why did they dicided to create a skateboard
3. How has skteboards changed since it started.
3.1. How did they look then
3.2. How do they look now
4. How tricks were made.
4.1. Different tricks
4.2. Who did it first
