This work introduces a new and innovative course written specifically for the new two-tier Modular specification and provides complete coverage of the Modular topics, with everything students need to know in order to achieve their full potential. It contains plenty of worked examples, useful hints and exam practice questions to enhance students' understanding and consolidate learning. It includes class discussion points and ICT tasks to add variety to lessons and engage students' interest. Its mini coursework tasks equip students with the skills they need to successfully pass.