The Service Design Tools site is a wonderfully detailed collection of resources suited to evaluating user contexts, for helping you adopt a `design attitude'. The resource is supported by an on-going project aimed at bridging education, academic research and professional practices.
The design methods finder offers another possible source of inspiration for identifying research (and design) methods to apply to your own design research project.
The Nielsen Norman Group (Jakob Nielsen, Donald A. Norman, Bruce "Tog" Tognazzini) has been behind a sustained drive to professionalise high tech design by defining a new kind of occupation; Interaction Design.
https://useit.com
This is (was) Jakob Nielsen's site for sharing thoughts on the principles of interaction design, events and ID community material.
Bruce Tognazzini's site and his take on design principles.
