Share 'How to work with an Agency, Firm, Headhunter, Executive Search Pro. etc.'

We'll be meeting some professionals this term. I hope to learn from them some good information about how we can be excellent clients and make the most out of our work with an agency. Here's some good reading to get us started. The Riley Guide, my very favorite of the giant, meta-resources, has a section on how to work with agencies. I would love to hear tips and suggestions from our community on…