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

The grip tape found on a skateboard can actually be defined as the grainy sheet, which resembles sandpaper that also comes with a sticky underside. Such underside needs to adhere to the deck’s surfaces as a means of increasing traction or grip. No matter what skating style you use, the grip tape is extremely helpful in your attempt to stay on the board.
Just before a skater performs an ollie, there are three forces acting on the skateboard. One of these forces is the weight of the rider, shown here with two red arrows. Another is the force of gravity on the board itself, shown with a small black arrow. Finally, blue arrows show the force of the ground pushing up on the skateboard. These three forces balance out to zero. With no net force, the skateboard doesn't accelerate, but rolls along at a constant speed.
Grip tape is a sheet of paper or fabric with adhesive on one side and a surface similar to fine sandpaper on the other. Grip tape is applied to the top surface of a board to allow the rider's feet to grip the surface and help the skater stay on the board while doing tricks. Grip tape is usually black, but is also available in many different colors such as pink, red, yellow, checkered, camo, and even clear. Often, they have designs die-cut to show the color of the board, or to display the board's company logo. Grip tape accumulates dirt and other substances that will inhibit grip, so use of a grip eraser or rubber eraser is necessary after riding through mud or with dirty shoes.
Mounting hardware is a set of eight 10-32 UNF bolts, usually an Allen or Phillips head, and matching nylon locknuts. They are used to attach the trucks (and any type of risers) to the board. Some sets have one different colored bolt to show which side is the nose of the skateboard. Hardware is available in various lengths for mounting trucks with or without risers.
Smile and wave – Feel free to look around at all the other people at the skatepark that stood by and marveled at your new-found accomplishments (all one of them). I’m sure by this point you’ll be picking up roses that are being thrown at your feet, and taking a well-deserved bow as they begin to chant your name. Take it all in, thank the crowd for their undying affection, and then go get a snow-cone. You deserve it, champ.