It’s worth continuing on with chapters 0 & 1 – they are a great introduction to C aimed at musicians.
I think it’s useful when diving into a new subject to do comparative reading. It’s getting old now but I like to refer to steve oualline’s ‘practical c programming’ book in this way. Another good reference (mentioned often in this forum) is the more recent ‘21st century c’ book by ben klemens.
But the introductory chapters in the audio programming book are very good, and the rest of the book builds directly on them.
Referring to the same subject in a different text or texts when the book feels unclear can really connect the dots even when none of the texts cover the material completely clearly. Comparing helps push aside certain phrasing or jargon or omissions of context that are confusing when getting into something unfamiliar imho…