Let's Study (HEP)
Catching up on math: The fundamentals: Paul's online math notes http://tutorial.math.lamar.edu 3Blue1Brown playlists: Linear Algebra , Calculus , Diff Eqs Stewart, Calculus Boas, Math Methods Tao, Analysis More Advanced: These aren't necessarily essential as physics texts will force feed a lot of it to you, but: Zee, Group Theory in a Nutshell Georgi, Lie Algebras in Particle Physics Functional Analysis: Baggett and Meise/Vogt Choquet-Bruhat & Morette, Analysis, Manifolds, and Physics Stepping into the quantum/relativistic: Baby steps: If you've never done much physics or math yet still want to give it a go, check out: Susskind's theoretical minimum: QM text and lectures Shankar's fundamentals of physics: text one , text two , lectures 1 , lectures 2 Veltman, Facts And Mysteries In Elementary Particle Physics Georgi's classical mechanics lecture notes Diving into mechanics: Let's get serious ...