Improve your skills and knowledge with the National 4 Computing Science Study Guide from BrightRED Publishing . From the authors of the bestselling National 5 and Higher Study Guides, this guide will give you all the tools you need to succeed at National 4. In this Study Guide, you will find: helpful advice and tips on the course, including on the Assignment; Don't Forget features with helpful hints on key points; Things to Do and Think About sections which provide you with plenty of opportunities to put your knowledge into practice.