The development model has various people being responsible for integrating patches in various subsystems, with integration done in a tree-like fashion. A lot of

The development model has various people being responsible for integrating patches in various subsystems, with integration done in a tree-like fashion. A lot of people are contributing reviews. To get acquainted, there are some tutorials about writing minimal modules, and reference books like Linux Kernel Development, third edition, by Robert Love. If some area has changed since the book was out, LWN (Linux Weekly News) has an article about it, often quite detailed.