0 How to ollie

First before you learn many trick or style on skateboard you must learn ollie. This description about ollie

The ollie is a skateboarding trick where the rider and board leap into the air without the use of the rider's hands. Particularly on flat ground, it is not intuitively obvious how the liftoff is achieved, making the trick visually striking.


The ollie is a fundamental trick in street skateboarding, and is used to leap onto, over, or off of obstacles, or over gaps of unfriendly terrain such as grass or stairs. As so many other tricks depend on it - for example the kickflip and heelflip - the ollie is often the first trick to be learned by a new skateboarder. The ollie typically takes considerable practice to learn.  Source : wikipedia

 

you can learn from the image or this video

I think ollie very easy to practice but you must learn everyday to get professional ollie. Have fun with skate :D