This response is based on the information provided.  We suggest you discuss with your contracting team as appropriate. 

DAU does not have a specific course for creating and administering BPAs.  We found the following after a quick search.

Informational Guidance (IG) IG5313 Blanket Purchase Agreements Description A blanket purchase agreement (BPA) is a simplified method of … Date of purchase …

              www.dau.edu/cop/.../DAU Sponsored Documents/BPAs.ppt 

Search on Blanket Purchase Agreements within the DAU and in a general search to find sources of information. 

There is not much out there.  Training is often at the unit or command level.