From one of the reviewers of early drafts of my book:
Just wanted to drop you a quick PM an let you know how much I am liking your book, just wanted to let you know how fun it is to read, so many technical manuals can be boring but this is fun whilst also being very informative, nearing the end of chapter 2 at the moment and cant wait to get my next fix!
I can see why that would make you happy. I don’t think you could ask for a much better review.