OCR A level Computer Science overview

http://www.ocr.org.uk/qualifications/as-a-level-gce-computer-science-h046-h446-from-2015/

PDF of A level specification

http://www.ocr.org.uk/Images/170844-specification-accredited-a-level-gce-computer-science-h446.pdf

Buy the course book:

https://www.pgonline.co.uk/resources/a-level/ocr/ocr-a-level-textbook/

Computational Thinking Resources from Google Education

“Fun” Reading for Students Starting a Computer Science Related Course by Paul Curzon