Without minimizing the quality or your book, I actually like subject matter books that encompass prerequisite knowledge into the text without forcing the reader

Without minimizing the quality or your book, I actually like subject matter books that encompass prerequisite knowledge into the text without forcing the reader to read another book in parallel (e.g. Calculus for Machine Learning by Jason Brownlee or No Bullshit Guide to Math & Physics by Ivan Savov). Though not saying that these books are better, they appeal to my learning style a bit more. Learning institutions tend to force students to take too many courses in parallel when they should find a way to join the subjects, whenever possible, without having to break the instruction into multiple semesters, just to sell more books.