[AbbeFaria]

Go do the xv6 labs from the MIT 6.828 course, like yesterday. Leave all textbooks aside, even though there are quite a few good ones, forget all GitHub tutorials that have patchy support, blogs that promise you pie in the sky.

The good folks at MIT were gracious enough to make it available for free, free as in free beer.

I did this course over ~3 months and learnt immeasurably more than reading any blog, tutorials or textbook. There’s broad coverage of topics like virtual memory, trap processing, how device drivers work (high-level) etc that are core to any modern OS.

Most of all, you get feedback about your implementations in the form of tests which can help guide you if you have a working or effective solution.

10/10 highly recommended.