Topics to study should include: Unix IPC, signals and syscalls, filesystem and kernel implementation details, and network/socket programming. Being able to rea

Topics to study should include: Unix IPC, signals and syscalls, filesystem and kernel implementation details, and network/socket programming. Being able to read and write C programs goes a really long way. Beej's guides are a good resource. I learned a lot from them. Guide to network programming: https://beej.us/guide/bgnet/html/multi/index.html https://beej.us/guide/bgnet/html/multi/index.html Guide to Unix IPC: https://beej.us/guide/bgipc/ https://beej.us/guide/bgipc/ The Unix Programming Environment (Kernighan & Pike) is also very good. http://files.catwell.info/misc/mirror/the-unix-programming-environment-kernighan-pike.pdf http://files.catwell.info/misc/mirror/the-unix-programming-e... A good exercise would be to write a simple IRC-like chat server and client in C.