Some resources I often refer to.
Daily arXiv hep-th papers: High Energy Physics - Theory authors/titles "new" (arxiv.org)
Daily arXiv math.DG papers: Differential Geometry authors/titles recent submissions (arxiv.org)
Physics Stackexchange: Physics Stack Exchange
nCatLab: nLab (ncatlab.org)
David Tong's lecture notes: David Tong: Cambridge Lecture Notes on Theoretical Physics
PIRSA (Perimeter Institute): Talks | PIRSA
John Baez: John Baez's Stuff (ucr.edu)
JHEP (I rarely check journals): Journal of High Energy Physics | Home (springer.com)
't Hooft: How to become a GOOD Theoretical Physicist (goodtheorist.science)
Crackpot index (suggested to be included by a colleague): Crackpot index (ucr.edu)
The Way Theorized (my colleague's blog I frequent to realize I know nothing; a very good blog with good notes and write-ups): The Way Theorized (aayushayh.blogspot.com)
----------
Here are some materials (a selected few) that I used while learning physics (not a full list yet):
- General relativity: Hawking and Ellis, ``The Large Scale Structure of Spacetime", 1973. Misner, Thorne, Wheeler, ``Gravitation", 1973.
- Quantum field theory: Srednicki, ``Quantum Field Theory", 2006 (http://www.physics.ucsb.edu/∼mark/qft.html). Tong, ``Quantum Field Theory", 2006 (http://www.damtp.cam.ac.uk/user/tong/qft.html).
- Differential geometry:
- Statistical mechanics:
- String theory: Green, Schwarz and Witten, ``Superstring theory: volume I", 1988. 't Hooft, ``Introduction to String theory", 2014 (https://webspace.science.uu.nl/~hooft101/lectures/stringnotes.pdf). Wray, ``An Introduction to String theory", 2011 (https://math.berkeley.edu/~kwray/papers/string_theory.pdf).
- Gauge/gravity duality and AdS/CFT: Horowitz and Polchinski, ``Gauge-gravity duality", 2006 (arXiv:gr-qc/0602037). Ramallo, ``Introduction to AdS/CFT", 2013 (https://arxiv.org/abs/1310.4319).