Master computational thinking and programming concepts with this focused guide designed for the International Baccalaureate Diploma Programme (IBDP) Computer Science course. Centered around pseudocode using IB-approved notations, this handbook offers a thorough introduction to the fundamentals of computer science. With clear explanations, illustrative examples, and engaging practice exercises complete with solutions, it strengthens understanding and builds programming proficiency. From developing problem-solving strategies to honing algorithmic thinking, this resource equips both beginners and aspiring computer science enthusiasts to tackle complex challenges confidently. An indispensable companion for IBDP Computer Science, it lays the foundation for success in the course and beyond