Comprehensive study guide and lecture series on Computer Science.
Learn about the physical structure (hardware) and operating principles (software) of computers, as well as the basics of algorithms for efficient data processing.
Study various sorting algorithms and the principles of search algorithms that find desired information instantly within massive data sets.
From arrays and linked lists to stacks, queues, hash tables, and trees — understand the properties and time complexities of core data structures, and learn how to choose the right one for each situation.
Understand how an operating system manages processes, memory, and file systems. Learn the principles behind process scheduling, deadlocks, and virtual memory to grasp how computer systems truly work.
From the OSI 7-layer model to the TCP/IP stack, HTTP/HTTPS protocols, and beyond — understand step by step how the internet works. A clear summary of DNS, routing, and socket communication essentials.
Learn the core concepts of relational databases and SQL basics. Covers normalization, indexes, transaction ACID properties, and the differences between SQL and NoSQL — a complete foundation for database design.