I’m interested in this. What it the best way to learn the material? The book? The coursera course? Both? It’s a bit hard to tell just from the website.
The first 6 projects do not require purchasing the textbook as the relevant chapters are provided along with the project material. The next projects do not have the textbook chapters provided, so I bought the textbook.
I'm currently working on Project 8. I've been blogging about my progress here, if you want to take a look: https://gurudas.dev/tag/nand2tetris/