Not the easiest book to use at first. The theory in earlier chapters is difficult to follow, and in many cases needs gone through several times before the "aha!" moment. In some cases I didn't get said moment until Calc III, during bits of review. Theory in the latter part of the book is easier, as are the examples, though I'm not sure how much of that is from increased familiarity with both the subject and writing style.
Homework is reasonably straightforward for the drill type problems, but the word problems and proofs can be difficult to set up. Nor are the solutions manuals much assistance in this regard, either because the problem is even and not included, or because the worked out solution skips steps that are not yet obvious to someone only recently introduced to them. They are not useless as study aids because you can still check basic setups for drills and check final answers, but as far as delineating how to work out those problems that are most useful in understanding the material they fall flat.