You are confusing “come across when doing a project” aka documenting project or information specific to a project (ex: config, strategy etc) with “learning some

You are confusing “come across when doing a project” aka documenting project or information specific to a project (ex: config, strategy etc) with “learning something new” (ex: neural networks, linear algebra). They are two different activities and requires different strategies. One requires proper documentation not scribbled notes, the other requires learning and notes as a method of learning and not a tool of reference.