This is a good, quick starting point for people wanting to learn how to ollie. This is what a beginner should do when learning because it should minimize the risk of them hurting themselves. I've been skating since 6th grade but am clearly out of practice with some of my ollies as seen in this video, but my tips and tricks can be helpful. I had to record myself by propping my phone up, which I haven't done in a few years specifically for skateboarding, which was a major throwback. Expect slow progress and make sure you work at becoming very comfortable riding at the same time you learn to ollie, if not before. Practice makes perfect, but you should compare your foot position to other riders as well to make sure your form is right.