I'm in the same boat. I worked on a pet project while reading the book (still at it). Make some progress, read about how unit tests are done, add some unit test

I'm in the same boat. I worked on a pet project while reading the book (still at it). Make some progress, read about how unit tests are done, add some unit tests, learn how modules work, refactor some code into a module.. Inbetween I google some things that I need but haven't mentioned in the book yet but that I need at that moment (e.g. cow strings used in a crate). Works for me!