There are a lot of books about copywriting.
And I'm attracted by this book.
The best book on copywriting, I've found is The Ultimate Sales Letter by Dan S Kennedy.
For a few reasons:
Reason #1: This book discusses the analogy of writing a good copy.
Reason #2: After reading the first few pages, you’ll realise that Anybody can learn to craft very effective sales copy.
Reason #3: If you don’t have practical experience with the topic of copy you’re writing, the solution is this book.
Reason #4: Understand the customer. You can’t understand someone until you’ve walked a mile in his shoes.
Reason #5: Reader First — Product Next. You’ll understand why you shouldn’t focus on the product first.
If you are at all interested in copywriting, I can't recommend this book enough.