The Powell Golden Dragon 2 Skateboard is an affordable and complete skateboard for the beginners and also for the advanced skaters.  It has high-rebound, hand-cast polyurethane wheels to give you a great roll and grip.  It measures 7.5 inches wide with a colorful screen-printed bottom.  It is made in China and has an average rating of 4.2 on Amazon.
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It's a neat piece of science art, and it also tells us something interesting. The arrows show us that the force on the skateboard is constantly changing, both in magnitude as well as in direction. Now the force of gravity obviously isn't changing, so the reason that these force arrows are shrinking and growing and tumbling around is that the skater is changing how their feet pushes and pulls against the board. By applying a variable force that changes both in strength and direction, they're steering the board.
My problem is that my board always lands crooked when I Ollie. The worst thing is that I even tell myself to “keep your shoulders straight” while I’m doing the Ollie and I still land crooked. I think it’s just hard for people to grasp the simple fact that everything on a skateboard has to be done horizontally which is odd because people don’t walk sideways. We walk straight. Like roller blading for example…. it’s easier for me to roller blade because I’m used to walking and running obviously except with a skateboard everything is as if you were hopping over a fence sideways. Skateboarding is tough.
Unlike some deck options, which are completely bare, the Bamboo Skateboards Galaxy Series Cosmic Cloud Skateboard Deck features heat-stamped artwork on the underside of the board, including several geometric and interstellar designs, including a beautiful nebula. Bamboo Skateboards claims these boards last their customers three weeks longer than other decks. The company sells the boards in three sizes: 7.75-by-31.5-inches, 8-by-31.75-inches and 8.25-by-32-inches.

It’s not just standard deck sizes that are available for creating or replacing your board. You can just as easily get a great longboard deck to work on in your basement or garage. One of the best and best reviewed options out there is the Loaded Boards Poke Longboard Skateboard Deck. This standard-design longboard deck has it all to help you make the ideal board. 

There are other types of ollies that you can do either alongside or combine with the ones listed above, like the tailgrab, indy grab, melon grab, stalefish, tweak, and dolphin nose. All of those skateboard tricks are performed more or less how they sound, but you might want to watch some videos on youtube to see a pro in action (as well as awesome cat videos).
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]

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.
Whatever you do, don’t give up. Keep trying. If what you’re doing isn’t working, try something new. Skateboarding is all about experimenting with new ideas and finding out what works. Keep tweaking your results until you get what you want. Watch as many trick tip videos as you can, get advice from good skaters, and remember to enjoy yourself. If you don’t give up and you keep trying, eventually you’ll master the Ollie. Don’t let it frustate you, it takes time and lots of practice.
So now that you have an idea of what size and shape board you like, it’s time to choose a brand. A popular size is an 8.5 skateboard deck. If you were looking for a size 8.5 skateboard deck, you could narrow the decks offered on to fit in the 8.25 - 8.5 range. This will show you all the boards in that range, and significantly reduce the boards you have to look through. Now, if you don’t have a preference on board brands, find a graphic you like and you’re all set. If this is your first skateboard or are still learning about what wood and brands you prefer, we recommend checking out a CCS Skateboard. They give you a bang for your buck, that's for sure.
Jump – Ah yes, finally, we have reached the move itself. Basically, you have to do about twelve different things all at once to execute a successful ollie-pop: lift your front foot, press down with your back foot, angle your front ankle,  and jump. Lift the front foot off the ground first, and then move your back foot. This whole process is easier if you’re actually moving forward – since you don’t have to fight for balance – but it can be done while you’re standing still as well.
The wheels of a skateboard are usually made of polyurethane, and come in many different sizes and shapes to suit different types of skating. Larger diameters (55–85 mm) roll faster, and move more easily over cracks in pavement and are better for transition skateboarding. Smaller diameters (48–54 mm) keep the board closer to the ground, require less force to accelerate and produce a lower center of gravity which allows for a better response time, but also make for a slower top speed and are better for street skateboarding. Wheels also are available in a variety of hardnesses usually measured on the Shore durometer "A" scale. Again like car tires, wheels range from the very soft (about Shore A 75) to the very hard (about Shore A 101). As the A scale stops at 100, any wheels labeled 101A or higher are harder, but do not use the appropriate durometer scale. Some wheel manufacturers now use the "B" or "D" scales, which have a larger and more accurate range of hardness. Modern street skaters prefer medium-sized wheels (usually 51–54 mm), as small wheels with lighter trucks can make tricks like kickflips and other flip tricks easier by keeping the center of gravity of the skateboard closer to the deck, thus making the deck easier to spin. Street wheels are harder (A 100/A 101). Vertical ramp or "vert" skating requires larger wheels (usually 55–65 mm), as it involves higher speeds. Vert wheels are also usually slightly softer (A 98/ A 99), allowing them to maintain high speed on ramps without sliding. Slalom skating requires even larger wheels (60–75 mm) to sustain the highest speeds possible. They also need to be soft and have better grip to make the tight and frequent turns in slalom racing. Even larger wheels are used in longboarding and downhill skateboarding. Sizes range from 65 mm to 100 mm. These extreme sizes of wheels almost always have cores of hard plastic that can be made thinner and lighter than a solid polyurethane wheel. They are often used by skateboard videographers as well, as the large soft wheels allow for smooth and easy movement over any terrain.