A skateboard deck is made up of curved layers of wood that are combined with glue. Then, the skateboard deck is trimmed down to a board shape that is practical. Trucks are typically made of aluminum or other metal alloys. They are made by melted metal formed by a mold and later drilled into the skateboard deck. The wheels are formed the same way, but with polyurethane. They are attached by ball bearings to complete the product.
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.