That's pretty good going! In sixty pages you've got to grips with object-oriented programming! Obviously this chapter doesn't cover everything to do with OOP in Access, but we have covered a good deal of material and certainly enough to get you started.
If you are coming to this from a traditional programming background, you might find it takes a little time to feel totally comfortable with the way it works. But don't worry, just read the chapter again, try out the code and don't be afraid to experiment. After all it's often only when you get down to cutting code for yourself that you really understand how it all fits together.