I had to install the game on my iPAQ first, then record a registration number from the game, input that number on the product key page and click submit. I was then given a number that I had to input in the game. I nstallation was a breeze. Jump gate allows you to fast forward to any level you have successfully reached. Controls gives you screen shot of the iPAQ and an explanation of what all the buttons are used for, followed by a screen that gives you hints on how to better control your ship, and the last screen lists the power-ups and allows you to view a demo or the intro.
High scores is pretty self explanatory.
I would definitely recommend playing several rounds of the game in training mode to get familiar with controls and layout of the different levels. Training mode is basically a slow motion version of the game. Landings are a key part to this game. The better and more accurate the landing, the more points. Each level has different missions.