Here follows some links that I find very useful, starting with arxiv.org
which is a depository of almost all maths and phys preprints since 1992.
It's not easy to think of something that's not there.
Not Even Wrong regularly posts links to conferences, books and papers
on modern mathematical physics. Peter Woit provides an antidote to
hype related to string theory as a unified theory of all fundamental
interactions, but here we focus only on mathematical physics.
A number of maths and phys departments have channels on
youtube.com where the post videos of their lecture series.
The following are the ones that I know.
