I use the following sources when writing up sections of my blog:

Hyperphysics: http://hyperphysics.phy-astr.gsu.edu/hbase/hph.html

Advanced PhysicsBook by Jonathan Allday and Steve Adams

ALICE MasterClass: https://alice.physicsmasterclasses.org/MasterClassWebpage.html

Bang! Science: www.bangscience.org

MIT technology Review: https://www.technologyreview.com

New Scientist: https://www.newscientist.com

Zooiverse: https://www.zooniverse.org/#