How did Albert Einstein learn quantum mechanics?

This is like asking how Sergey Brin learned to use Google. Einstein learned quantum mechanics by co-founding it and by spending decades developing it, before handing the baton to others. read more

Quantum entanglement, a perplexing phenomenon of quantum mechanics that Albert Einstein once referred to as "spooky action at a distance," could be even spookier than Einstein perceived. read more

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).: 274 His work is also known for its influence on the philosophy of science. read more