I ride on a skateboard 
I used to ride a skateboard in my youth. It was a lot of fun.
I have a fried with which we ride together. Do you know the history of skateboard
I do know over many years skateboarders have influenced and shaped the sport.
Which of skateboard and ice skating come first
I would say ice skating since I know a primitive form of ice skates have been in archaeological records beginning around 3000 BC.
What are the skills needed in Ice skating I want to try it out
Well I would think balance is an important skill, plus actual ice skates to move across the ice.