I'm in two minds about this. Some articles add useless information in the beginning in cases where I just want a quick fix for the issue. But then there are some instances where knowing how that particular thing works can give me context on what is going on and how it can be fixed. I'm guessing it all depends on the problem and how much time you want to invest in solving it.

Is there a version or a similar book that deals with Calculus?

[Author here] We hear you! Here's a similar book for Calculus: https://github.com/the-little-book-of/calculus

In this book, I cover Functions, Derivatives, Integrals, Multivariable Calculus, and Infinite Processes. In addition, I've included appendices with sketch proofs and applications to Physics, Probability and Statistics, and Computer Science.

It is not visible to the public, I think.

Serge Lang's "Short Calculus" is clear and concise, efficiently covering the basics in ~170 pages instead of hundreds of pages like some books. It then has a few more chapters going into a bit more depth but on topics that are also essential if you want to take things further