If you want to know how CD reading and writing is done on a hardware level, there is an interesting channel on YouTube called Technology Connections where a lot of the history of CD is discussed in a pretty accessible way. There’s also lots of videos on rather obscure technology like the CED, a vinyl video format.
I remember how amazing these products were when I first saw them, how expensive they were, and how I thought about all the amazing things I could do if I could make my own CDs ( and then DVDs and then Blu-Ray ).
I haven’t had to burn a disk in years, and this past week I actually had to buy some DVD-Rs! I will be appearing in court and need to burn some dash-cam footage to DVD so it can easily be played in the courtroom. They don’t want to deal with video on thumb drives, etc.