The manual isn't really worth consulting. This is only because it was written in 2000, or thereabouts. For most applications, you buy it and all you get is the odd bugfix. With DBP, it has 10 years of evolution built into it, and the manual has become outdated. The help files are the main source of information as these are pretty much up to date.
Now you have to think like a programmer, not a student! You have a problem and you have to find the best way to solve it. This involves working through the commands that might provide the solution. Along the way, you learn things you never knew and will be useful in the future.