The training phase of a salesforce.com implementation is the best opportunity to drive end user adoption. To increases your chances of success, follow these training best practices:

1. Role Based Training - training should not be the same for all roles; it should be tailored to each role, and start with the managers; focus on showing them the value of the tool and how to get the info they will want from it; they don't need to know how to convert a Lead to an Opportunity as much as they need to know which reports will be most useful to them and how to run them