Can I use this as a server training manual?

Sure.  I think it would be the best server manual I have ever seen used in a restaurant.  My only word of caution would be that it might be a bit long for a new server to digest on top of learning your menu, computer system, and in house policies.  I would recommend instead contacting me at David@hospitalityformula.com to discuss a more affordable, streamlined, and customized training manual that can be created specifically to meet your training needs.   This method combines not only the benefits of the book, but can be customized with information specific to your company.  You can receive this quality for less than the price of most generic server manuals that are currently being sold by other companies.