We have found interesting information at the following sites:

Product Development

The International Council on Systems Engineering has information on the CSEP designation along with various efforts System Engineering publications.

INCOSE, PMI and MIT recently published a paper on "Lean Enablers for Managing Engineering Programs".

The "Guide to the Systems Engineering Body of Knowledge" was just released in wiki format.

Project Management

Find project management related information at Project Management Institute.

Need information for certification to manage federal sector projects?  Department of Defense certification.  All other agency certifications.

Find information about Prince2.

Decison Making

Recomended reading - Make Up Your Mind by Hal Mooz.