Lesson 1. Memorize the help file index.
Just teasing. Try exploring different keywords in the 'Commands' section of the help main menu and looking at the examples provided. Also, start small. Don't start by trying to make a game. Start by learning what it takes to make a game. Look at examples of other people's code. Browse the forum and copy/paste stuff into DBPro and see if you can figure out what it will do before you run it. After you run it, look at the code and see if you can figure out what made your screen come alive. Try changing aspects of the code to get different results.
I only started a few weeks ago, and have made astounding progress by using the search on the bottom of the forum as well as lots of trial and error. There is a ton of information on this here forum. Gobble it up!
With a little patience and determination you can easily make something. Don’t try to make the most graphically intense, loaded down with effects game ever to exist... yet. Atari was out before xbox360 for a reason. It was an accomplishable goal with the resources at hand. Learn your tools before you make a statue... practice makes perfect... good analogies are like diagonal frogs... Just roll with it.