This is a good book about Subversion. From starting, it will show you a story of daily working tasks relate with Subversion: You update your working copy, commit your changes, resolve the conflict...
This book will show you
+ The advantages of Subversion
+ How to create repository
+ What you should import to your repository and how to do
+ Why you need to create tags and branches and how to do
+ How to organize your repository also project
+ And many things...
I prefer this book than Version Control with Subversion 'cause I'm a developer, I don't need to focus in administration.
Next step: Practices of an Agile Developer - Working in the Real World