In 1982, while competing in the Rusty Harris contest in Whittier, California, Rodney Mullen debuted an ollie on flat ground, which he had adapted from Gelfand's vertical version by combining the motions of some of his existing tricks. Mullen used a "see-saw" motion, striking the tail of the board on the ground to lift the nose, and using the front foot to level the board in mid-air.[2] While Mullen was not initially impressed with his flat ground ollie, and did not formally name it, he realized it opened up a second, elevated plane on which to perform tricks.[citation needed]
The Fakie is almost the same thing as a regular ollie-pop, but instead of going forward, the skater is going backwards when they pop the board up in the air, usually performed when you’re in a switch stance. A switch stance is when your feet are in the opposite stance of how you normally would stand, like when you write with your left hand instead of your right (if you’re right-handed).
Skateboarding started in California in the 1950s.[2] The first skateboards were made from roller skates (attached to a board).[3] Skateboarding gained in popularity because of surfing; in fact, skateboarding was initially referred to as "sidewalk surfing". Initially, skateboards were handmade from wooden boxes and planks by individuals. As the sport became more popular, companies started manufacturing skateboards. Boards are also continuing to evolve as companies try to make them lighter and stronger or improve their performance.
The most common shape in skateboarding is called a popsicle shape. It has a curved tail and nose and features concave, which gives the board it’s shape. New skateboarders looking to learn how to carve, push, ollie, kickflip, and grind boxes, ledges, and rails should start with a popsicle shape. If you’re interested in knowing, we explain selecting a board by width, riding style, and board shape in the skateboard decks section of the buyer’s guide.

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.