TBH a repo is not worthwhile in my opinion because I can't imagine us adding a lot more resources and because the problem of needing to find the repo link still persists, but you do you.
@bhanuponguru, I'm not too sure. Have you tried compiling them all with pandoc or something similar? A lot of those use PreTXT as one of their dependencies, so you may have to look into that as well. It's for that reason I don't try and compile the .tex and either read it directly or access the contents online. Most of the time it's too damn painful and not worthwhile to figure out all the compilation.
I don't know where this one should go. This is one of my favorites, but it's too informal to be used in a class on compilers, at least without some supplementary text. Nevertheless, Crafting interpreters is a fantastic read for a gentle introduction to how programming languages work. You need a background in both Java and C, the latter not until the second half of the book, to fully enjoy this one. @Leos, this is as close as I can find to what you listed when it comes to things like Languages. Code / group theory is abstract algebra, I think, unless those groups aren't the groups I'm thinking of, in which case disregard.

Hey all,
Another good resource I discovered thanks to my own uni recommending it actually as one of their alternative textbooks for our calculus course:
Right Here
There's like 5 calc books in there all fully online with accessible MathML, complete with exercises.
PS. try going to just that subdomain and you get a rather hilarious bit of text, especially given that this is supposed to be a university website.

I am figuring out books for my next semester, and here is our cryptography textbook. Perfectly accessible. Requires knowledge of number theory, specifically mod arithmetic / linear congruences, and basic probability.

Whoops? I fixed it. I linked to the book from my bookshelf for some reason--I must have logged in before writing the post.
I'm happy to help with the book if you want to give it a shot. I still remember computer architecture, and I will take advanced version in the Spring, so feel free to ask.

@32, you may wish to check out Serious Cryptography; I linked to it in the list of resources I maintain. You might also delve into compilers, interpreters, etc.; for that, I'd recommend Engineering a Compiler, which is a modern approach to developing them. Last but not least, for computer architecture, I'd recommend three books: Assembly Language step-by-step and two with similar titles -- Computer Organization and Design RISC-V and ARM Editions: The Hardware Software Interface. Both editions cover similar content but cover different computer architectures. RISC-V might be easier to work with just because it doesn't have all the extra baggage that ARM comes with. On the downside, the RISC-V ISA manual (which you may find handy if you need to write pure assembly language programs) doesn't use accessible diagrams for it's encodings and syntax's, but that's being worked on and ChatGPT is capable of helping you out in the meantime if you want to use that. I hope I'm not regurgitating things I've already said; I'm unsure how far your education has progressed now, so I'm not quite sure where your at. Of course, others who may be going into these things may also find these books of use, even if they're paid. I've linked the Computer Organization and Design book (at least the RISC-V version) in the repo I maintain for programming resources; I don't however believe I've linked the other two, so here you go:

• Engineering a Compiler, 3rd ed.

• Assembly Language step-by-step

@37, serious cryptography's math is reasonably accessible, though it does use different math operators than what your used to (e.g. || is concatenation). Though for the more complex math I'm not sure how doable it'd be. But it's good enough to get across the critical information at least.
Regarding OS development, none of it is going to be easy. Your going to have to trundle through huge manuals like Intel's or ARM's, regardless of what you like. The OSDev wiki may be of assistance. But OS dev is always going to be messy no matter which architecture you use. X86 is the easiest because you have ACPI and PCIe out of the box and you don't need to configure the PCIe uplink or anything like you would on other architectures.

@39, I oftentimes just export the documents to text and do it that way. Give pdftotext from xpdf-tools a try. It's not perfect and the diagrams won't obviously appear properly, but it works well enough (even if the TOC gets messed up). If you have Discord/Matrix or something like that and can PM me that, I may have a private resource I maintain that you might find useful.

@Ethin, I don't believe I have your Discord? I'll send you PM with mine in a moment. Feel free to reach out.
@Still_Standing, doing a quick search yields this, although it is listed as a graduate course and so I'm not sure how applicable it is. Still. The file is in LaTeX, so you should be able to read it and perhaps get something useful out of it. This also has a tiny bit of complex analysis in chapter 11, although it might be further along than you currently are. Sorry for the lack of specifics here, I myself have not gotten to Real Analysis quite yet.

See post 14, although I would buy the seventh edition for the number theory textbook now.

You generally want to avoid reading diagrams in LaTeX. This is the only area it kind of falls down, they are verbose and hard to process. try to get your professor to describe it? You are mostly interested in what happens on the rising or falling edge of the clock anyways, so that shouldn’t be hard. at least that worked for me. We didn’t go into much circuitry, though, so you may have to find alternative options if you go in deeper.

Here is an accessible textbook for learning about networking. Knowledge of Python is assumed, but other than that I think this can be read as a standalone thing.
@bhanuponguru, you can also do Verilog for circuitry, although it could get... unwieldy kind of fast for anything nontrivial. Depending on the version you use, the behavior could be... inconsistent.