C Programming
The language that built Unix, Linux, Python, and almost every database engine. C gives you direct control over memory — no garbage collector, no runtime, no magic. Understanding C means understanding computing at its most honest.
Advanced
C Language Core
Variables, arrays, pointers, functions, structs, and the C standard library. The language from first principles.
Advanced
Pointers & Memory
Stack vs heap, malloc and free, pointer arithmetic, and understanding every memory-related bug at the source.
Advanced
Data Structures in C
Linked lists, trees, hash tables, and graphs implemented from scratch — no standard library shortcuts.
Advanced
Systems Calls & POSIX
The interface between user programs and the OS kernel. File descriptors, processes, signals, and sockets.