When I was about 10, I broke my first skateboard by riding it into a ditch. A decade later, in college, I broke another skateboard within an hour of owning it (surely a record) in a short-lived attempt at doing an ollie. (Surprisingly, the store accepted a return on that board even though it was in two pieces.) Then I was gifted a really nice, high-quality skateboard. The first thing I did with it was ride it down a big hill, a valiant but ill-fated adventure which ended with me jumping off the skateboard, rolling down the grass, and arriving scraped up, deflated, and rather disoriented near the entrance to my college cafeteria. (In my defense, the wheels and ball-bearings on that skateboard had been pre-lubricated to minimize friction, and why would anyone do that, that's just crazy.)
Both your height and weight should play an important role when you are choosing a skateboard. You need to find a skateboard, which fits your weight and height. Picking one, which is either too small or too big might only cause you to experience difficulty controlling it, especially if you are still a beginner learning the ins and outs of skateboarding.
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.
To summarize, a skateboarder's feet need to do two things successfully to complete an ollie. They need to provide a changing force to move the board correctly (so that the combined force of gravity and the skater's feet add up to the green arrows above), and they need to provide different amounts of force with each foot (shown by the red and blue arrows above) to steer and turn the board into the right orientation.
The laws for skateboarding helmets vary from state to state. Many states require that skaters wear a helmet under a certain age, and some states like California make all skaters under 18 wear a CPSC Certified helmet at all times. CSPC skateboard helmets usually have an EPS protective liner that meets the safety standards for skateboarding. Make sure you check your state's regulations before ordering.
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.
To get higher ollies, I would suggesting resting your back foot on the very end of the tail and the front foot in the middle of the deck to allow for more slide. Popping as hard as you can and catching your board in the groove of the nose with you ankle practically resting in the groove will level the board out in the air. after this initial movement slide you feet back to the bolts on the tail and nose to ensure a clean landing.