arXiv (preprints, a large number of papers are uploaded here before/after communicating to the journals ) : https://arxiv.org/
Virtual Science Forum (recorded talks on various topics useful to researchers): https://virtualscienceforum.org/
Link to the recordings of the online workshop on superconducting diode effects: https://virtualscienceforum.org/josephson-diode/
Link to the online school on Floquet dynamics: https://virtualscienceforum.org/floquet-school/
Physics Today - important developments in physics discussed at an elementary level https://physicstoday.scitation.org/journal/pto