This is a collection of bookmarks I’ve collected over the years of useful online physics notes; hopefully this will be of some use to others. My bias is as a computational physicist doing electronic structure theory for materials modelling, so all within the remit of condensed matter theory (no high energy physics, for instance, and nothing that would count as ‘theoretical’ research for the last forty years at least). Expect little outside pedestrian quantum mechanics and statistical physics, and the one fundamental force you can actually interact with.