Might be a bit different than what you're looking for but outside of printed books, it seems to be the most complete resource for C. And the CS50 Library, though not standard, is a well written extension to the standard library which may be helpful for common use cases.
You can stop saying if. It is nearly certain that any instance only has a partial dataset in the same way that a search engine only indexes a partial dataset of every web page.
If this is the case: what happens if a bad actor subscribes to all communities of all servers?
There are bots that were built to do exactly that. I wouldn't call them bad actors unless the instance owner prohibited such actions.
That's more than most SWE graduates have done, which is great! But it makes it difficult to judge what you might benefit from based on what you've shared.
To answer the title question, the suggestions provided by others here are all good resources for studying algorithms, but no one mentioned Algorithms Illuminated which is of a similar quality. Choose one of these suggested resources that vibes with your learning style.
But don't discount the suggestions to work on new projects that are outside of your current experience and requires more than your current knowledge base to complete. Trying things you haven't tried before really is the only way to do things you couldn't do previously.
Perhaps the following rewording of your last sentence would be easier for readers to follow along:
With a lack of precision, 1/3 might become 0.33333333. When evaluating the expression 1/3 + 1/3 + 1/3, using 0.33333333 as an approximate representation of 1/3 will return a result of 0.99999999, instead of the correct answer of 1.
Some people who are self studying Structure and Interpretation of Computer Programs have been using a discord server to assist each other as needed. I realize that there are a number of people using Lemmy whi are very opposed to using discord over other options, but I don't know of any other sustained forums focused on this book.
That's an entry point into programming that's not for everyone. It seems like the poster is looking for something more hands on and pragmatic rather than technical and academic.
How are you liking bearblog.dev?