I would never give up the dream, maybe tutorials will help. Mostly what is going to get you better is just doing things in the engine. I usually don't recommend making your dream game right away though, start with a mini version of the dream. Like a 2 scene ordeal, then you can start seeing what logic is scalable and what isn't. Scalable is a very very important thing or else you will get stuck a lot and that is no fun!