Okay, a couple of things here. If you went through that whole tutorial and understood everything, then you’ve made the first step. If there’s even one or two things you’re still not sure about, then do not by any means try to move on.
That being said, I’m going to go out on a limb here and guess that you are also new to programming in general, and not just Python. This means you have an extra step: learning programming. This includes things like logic and flow - things that apply to all programming languages. Now this isn’t as easy as looking up an online tutorial; you need to do most of this yourself, by using the knowledge you have to create your own programs.
Skimming through the tutorial, I’d have to say that it’s one of the better ones I’ve seen, especially for the beginner. However, simply mimicking the example programs is not enough to learn what it is to program, as it does not give you the most important lesson of all: failure. Nobody learns from copying a program and changing a few variables simply because it will still always work. To truly learn to program you need to write your own program from scratch. Your syntax needs to be wrong, logic completely backwards, and then you need to fix it. That is how you learn.
Sorry, this got a little preachy. I (as well as the rest of the Panda3D community I’m sure) appreciate that you’re being realistic about the games you want to start off making. But before you start with games, first make a program of your own creation, and make it as intricate as you possibly can, try things you’re not sure will work just to see what happens. Even if it’s text-based, you will gain a far greater understanding than anyone who has simply gone through a tutorial.
And finally, once you can do that, you’re ready for the next step: starting basic games. You’ll probably need a slightly more in depth knowledge of Python syntax if the Panda3D manual still doesn’t make sense to you. Either get a real Python book (the ideal way to go), or find more advanced Python tutorials/documentation. This is probably the most organized tutorial link list I’ve seen: awaretek.com/tutorials.html
And if you have any specific questions on how to do something, there are plenty of people here willing to help.
Well… that was long-winded, but I hope it helps. 