For the majority of your time only look at content that fills gaps in your knowledge tree that is beneficial for you. You will retain this information naturally

For the majority of your time only look at content that fills gaps in your knowledge tree that is beneficial for you. You will retain this information naturally since it will be supported by previous knowledge and reinforced with future content For fun (like 10% of your time) go on HN and other aggregators. Try to retroactively fit that knowledge into your knowledge tree, otherwise expect that content to be lost