Here are some websites that provide information and resources for physics and physics teaching. If you come across other sites that are useful, please tell us!
American Institute of Physics (AIP)
https://www.aip.org
American Physical Society (APS)
https://www.aps.org
Society of Physics Students
https://www.spsnational.org/
American Association of Physics Teachers (AAPT)
https://www.aapt.org/
PhysTEC
https://www.phystec.org/
Physics Education Research (PER) Central
https://www.compadre.org/PER/
APS Physics Education Research
https://prst-per.aps.org/
AIP Education Resources
https://www.aip.org/education/
APS Career Search
https://www.apsphysicsjobs.com/
SPS Careers Using Physics
https://spsjobs.aip.org/careers/