This website is one of the most in-depth guides I've come across, and his ambitions aren't modest either:
"It is presently set up only for those who wish to become theoretical physicists, not just ordinary ones, but the very best, those who are fully determined to earn their own Nobel Prize."
Moreover, the intention of his site is exactly the same as the purpose of this forum:
"It should be possible, these days, to collect all knowledge you need from the internet. Problem then is, there is so much junk on the internet. Is it possible to weed out those very rare pages that may really be of use? I know exactly what should be taught to the beginning student. The names and topics of the absolutely necessary lecture courses are easy to list, and this is what I have done below. It is my intention to search on the web where the really useful papers and books are, preferably downloadable as well."
"I think it’s permanently under construction now, and may have been largely abandoned. It does miss a lot of really fantastic, well-known resources, at least in the subjects I checked. So it’s one starting point, but definitely isn’t exhaustive." —NoxiousQuadrumvirate, Reddit