reading a paper is a really good idea and and these notes should be in a notebook or in some system and not simply written on the PDF of the paper because that you can't collect those those notes very easily you want these notes readily accessible for instance on an index card or a bunch of index cards so that you can flip through them quickly and take a look at all the all the relevant papers there's an old saying I think it's Chinese in origin that the faintest writing is better than the best memory and in the course of my time