You can get ahead very far with a 16h free course on kernel development https://training.linuxfoundation.org/training/a-beginners-guide-to-linux-kernel-develop

You can get ahead very far with a 16h free course on kernel development https://training.linuxfoundation.org/training/a-beginners-guide-to-linux-kernel-development-lfd103/ https://training.linuxfoundation.org/training/a-beginners-gu... A motivated person can run through it in a couple weeks while working a day job.