This is an area I’m using to accumulate my notes on coding, different languages and development technologies. I’ve got scribbles in various notebooks and, aside from the fact that my handwriting isn’t great(!), I want to consolidate it into one, easy to reference and search resource.
This also means I can keep track of what I’ve both learnt and am still learning as (call this a bad habit if you like) I tend to skip between subjects which interest me from month to month.