This CGP Complete Revision & Practice book is an excellent all-in-one guide to Grade 9-1 GCSE OCR Computer Science - fully updated for the specification changes starting in September 2020 and beyond. Everything's explained in CGP's clear, friendly style, and there are plenty of warm-up questions and exam-style questions (with answers) to test students' understanding of each topic. What's more the book is rounded off with a set of practice papers - perfect preparation for the real thing. And finally, we've included a free Online Edition of the whole book - just use the code printed inside the cover to access it on a PC, Mac or tablet. Don't miss our fantastic OCR GCSE Computer Science Revision Question Cards (9781789085600) for even more practice!