This book is a more problem oriented approach to complex analysis. It is pretty much just calculus on the complex numbers, and how that is different from and complementary to calculus on the real numbers.
This was the textbook for my first course on complex analysis. It is a good reference material for formulas and theorems. And has some good examples on how to solve problems. It also goes into some depth about applications. Which may be useful, but wasn't used in the class I took.
There were many typos and errors, so if something looks wrong in this book, it should be checked out.