I am writing to thank you for your simply wonderful resource. I decided to take the OCR Computer Science AS in March – just about able to enrol still! Once I was enrolled, I studied rather madly for about 8 – 9 weeks. I wasn’t long before I discovered you on YouTube, and I cannot begin to express how that discovery changed my learning. Strictly factual, clear and engaging videos made learning a pleasure. I thank you for my A – without your help my task would have been way more difficult.