There are plenty of resources available (beginning with the online help and ending with official trainings or white papers).
If the online help (check both dev. client and Windows client) does not provide the content needed, you will find material on PartnerSource:
- Online portal: https://mbs.microsoft.com/partnersource/marketing/campaigns/advertising/msdnavrapidstart.htm
- Training (see chapter 1): https://mbs.microsoft.com/partnersource/communities/training/trainingmaterials/student/course80435.htm
- White Paper: https://mbs.microsoft.com/downloads/partner/NAV/UsingRapidStartServicesMSDNAVMSDSureStepMethodologyWhitepaper.docx
If you are a customer with access to CustomerSource, use the advanced search for RapidStart