Learning to skateboard takes dedication.   If you want to learn fast, it helps if you have an order and a strategy.   Many new skateboarders try to learn to Ollie or learn to kickfliip before they are ready.  They will try to Ollie before they can effectively push their skateboard or even do a kickturn.   This often leads to frustration and even giving up.   So, for you parents and Noobs out there, here is an outline of some of the very first things you should learn to do on a skateboard.
The board also boasts of its reasonably small size and lightweight nature, making it easy to control and ride. In addition, carrying it wherever you want to go is also much easier because of its lightness. It is flexible enough that it can accommodate the needs of different kinds of users, including cruisers, travelers, beginners, expert riders, and kids.
So the proper foot placement for the ollie is with the ball of your back foot horizontal on the tail of your skateboard.  And your front foot centered on your board right behind the front trucks.  You may find that moving your feet around in different positions are more comfortable.  This is fine,  everybody can learn how to skateboard their own way.
This can be tricky to figure out, so just take your time and relax. The first few times you try and ollie, it helps to not worry about this part. You will end up doing a sort of half-ollie, popping just a little in the air. Or, you might fall! But, don't worry, this is all part of learning. If you want though, you can certainly start with rolling your ankle when you try and ollie - whatever works for you! Eventually, you will need to roll and drag, and you'll figure it out. Just take your time!
But there isnt a magic key or secret. Skateboarding is suprisingly a lot of brute force. That is, there is no magic secret, it’s practice practice practice. If you wanna learn any trick, keep trying that trick. There are of course proper techniques and improper, but theyre nigh impossible to describe effectively. it’s all about feel and a lot of tricks defy description.
Position your front foot near the middle and your back foot on the tail – The best position is for the ball of your back foot to be slightly hanging off, and the front foot more towards the middle. The position of the front foot can change, however, depending on how much air you want to get: if you’re planning on doing a monster jump, move the front foot closer to the back; if you’re just hopping a little bit, move it closer to the front of the board itself. Beware though, the closer you move it towards the back foot, the harder the trick is to perform.
There is no governing body that declares any regulations on what constitutes a skateboard or the parts from which it is assembled. Historically, the skateboard has conformed both to contemporary trends and to the ever-evolving array of stunts performed by riders/users, who require a certain functionality from the board. The board shape depends largely upon its desired function. Longboards are a type of skateboard with a longer wheelbase and larger, softer wheels.
Maybe you're new to skateboarding. We have lots of complete skateboards or longboards to get you started. All of our skateboard and longboard completes come fully assembled, so you can hit the streets without any of the hassle—try an Enjoi skateboard complete or check out our selection of Sector 9 longboard and skateboard completes. Or maybe you're an experienced skater looking to update and customize your ride. You probably want to start with the perfect skateboard deck before you do anything else. We carry high-quality skate decks to keep you steady and balanced while you bomb, slide, and carve the streets. We also have a variety of longboard decks in stock if you're looking for a smooth ride for cruising or commuting.

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.