Like I said, it teaches the basics. There's a single page on heap vs stack allocation and it says malloc allocates memory to the heap. That's it. That's all you really need to know to do stuff and it doesn't go into what malloc actually does under the hood.

Modern C has an entire chapter called "malloc and friends" where it goes into much more depth about malloc, calloc, realloc, etc.

The book is a good introduction to programming in C and I'm glad I read it. You obviously have a history with the author and I'll thank you to keep your past impressions out of this particular discussion.