Skateboarding for a beginner?

Hi my name is Josh and i recently just started skateboarding not too long ago. I have a nice board i think. An enjoi deck with thunder trucks, bone reds, and some spitfires. Sometimes i think i may be a little paranoid. I cant really do any tricks yet. I really wanna do an ollie but everytime i do it my back foot never comes up leading the board to only pop up. My control of the board is terrible. Sometimes i think i may fall when i turn. I can;t tic tac i really want to know how to improve on that. To do sharp turns i lift the front leg up and try to turn but when it is heelside or frontside i always mess up and end up hurting myself. Heel drag stopping is also hard for me i always end up hurting my self idk why. Help please. ty