Not Linux, but I'd recommend this lab from MIT. https://pdos.csail.mit.edu/6.828/2014/overview.html https://pdos.csail.mit.edu/6.828/2014/overview.html I comp

Not Linux, but I'd recommend this lab from MIT. https://pdos.csail.mit.edu/6.828/2014/overview.html https://pdos.csail.mit.edu/6.828/2014/overview.html I completed this one, but they may have more recent versions. They give you some initial code that you need to complete, as well as tests to check your work before going to the next step. It covers a lot of material. It takes some patience and it's not for complete beginners but it's a great fun project. Not sure, but I'd say it took me 1 or 2 weeks full time.