I just finished up a very good book called Breakthrough Business Development by Duncan Macpherson & David Miller. This book really focuses on the client management process and growing your business. This book is really intended for professionals that deal with client service such as financial advisors, attorneys, contractors, consultants, etc.
Though a lot of this is really common sense, it is something a lot of business owners seem to dump to bottom of the pile when it comes to running a business. The authors really drill home the concept of operating procedure manuals, maintaining a “roledex” to create more intimacy in client interaction, building a referral pipeline within your client base, the 80/20 rule when it comes to expansion, goal setting, and slew of other obvious but normally overlooked tips.
What I really liked is the authors use of easy to remember acronyms that emphasize their ideas of best practices and their concepts around creating organizational accountability. Give it a read and you should be able to pull some great ideas for yourself.