Coding related, i'm working on the CPP workshop. I'm taking my time with it as I want to do it properly (no hacks). Hopefully this will give me a good foundation to help me with my future projects. It's made me realise how important designing the project is, opposed to just diving straight into the coding as I've previously been doing.
If you read this JWalsh, thanks for the time you've put into this, it's helped me much more than any other programming resources i've used online.