The ebook here is complete enough in scope wit the typical complaints I have of books at this level: lack of set theoretic basis, treating y-intercepts as values not points and inelegance around exponential and logarithm applications. These days, the ebook is just a vestigial appendage hanging off the configurable online homework system, which Hawkes does well enough.
I like how the chapter sub-divisions are "Topics". Still, after teaching multiple courses from this text I find it merely adequate and often falling short on having necessarily complete examples... Ultimately, the self-guided student can't consider a course with this text self-contained.