An important part of the learning process is typing in code. This forces you to read every line of code, digest it, and will give you ample opportunity to practice and improve your typing skills.
Most code provided by RetroLCD.com will be provided in a way which discourages copying and pasting.
In fact, as projects advance, a lot of code won’t even be provided. Programming is about understanding a problem and figuring out how you would go about solving it. As you get better, your solutions will be better.
Provided code will focus on foundational knowledge like the alphabet, words and sentence structure. But; the idea is not to tell you how to write your book.
Print the Key-In Codes, trim and rotate the sheets to a comfortable angle and type them in. Keep a notebook handy so you can write down notes about what you learn.