If you already have basic coding knowledge but want to know more, this educational platform will teach you everything you need to know about the wonderful world of computer code. It’s a great way to keep up-to-date with the latest technology for those of you already working in the field. Although Code School offers a free subscription, this is very limited – you get 15 introductory lessons (beginner level). For some of you, that might be enough to see whether coding is for you. For the more ambitious, the paid subscription will take you anywhere you want to go.