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.

I have been doing ollie’s for about a year to a year and a halve, but thats not the problem. My problem is the board turns when i ollie, i cant help it, i am starting to go into harder ground (ollying off ledges and ollying stairs) but i cant land and ride away because my board has turned in a 45 degree angle and it jerks me off the board, Please help in all you can, cheers mate.
In this modern era, manufacturers are incorporating hi-tech processes and top-shelf materials into the construction of the skateboard. Companies such as Almost have several versions of hi-tech decks such as the Impact, Double Impact, and Uber Light Series. Element makes Highlight decks with inlayed fiberglass beams, and Foundation has its signature Fiberprime decks. Other manufactures such as Flip, Habitat, Plan B, Skate Mental, and Zero offer boards with high-end P2 Construction. Hi-tech decks differ from traditional 7-ply Maple in that they are inlayed with Carbon Fiber, Fiberglass, Poly Ply, or Kevlar to produce a stronger skateboard with more pop. For more options, head over to our stellar selection of Hi-Tech Decks! Although hi-tech decks have made a strong presence within the market, standard 7-ply Maple remain the gold standard. This is due to the solid feeling and pop afforded through layering 7 Maple wood veneers together. The large majority of skateboard decks offered are constructed of 7-ply Maple. Most board manufacturers offer both high-tech decks and standard 7-ply Maple. No matter what you desire, CCS offers a complete selection in multiple sizes, shapes, and construction types!
Ohderii Skate Skateboards are made of a High-quality Plastic deck which will not easily break even when pressed over by a car.  It comes with 3.125″ all aluminum alloy trucks, 59mm 78A super smooth PU wheels and ABEC-7 stainless steel bearings.  It is ready to use and you can easily store it in your backpack.  It has an average rating of 4.5 on Amazon.