Important memory management warning
I'm referring to our brain's memories for a change. If you try to memorize this chapter (or the next), you will have to make a lot of room in your brain and you will probably forget something really important in its place, such as going to work or thanking the author for telling you not to try and memorize this stuff.
A good goal will be to try and just-about get it. This way, our understanding will become more rounded. You can then refer to this chapter (or the next) for a refresher when needed.
Note
It doesn't matter if you don't completely understand everything in this chapter straight away! Keep on reading and make sure to complete all the apps.