I will be using galvanic skin response as part of my data collection for my research and found one article particularly helpful. It detailed both methods and materials. They were simply interested in testing whether they could detect stress through GSR but that is all I really need for my purposes as well so it was useful to me. I would recommend this for someone interested in using GSR.
Villarejo, M. V., Zapirain, B. G., & Zorrilla, A. M. (2012). A stress sensor based on Galvanic Skin Response (GSR) controlled by ZigBee. Sensors, 12(5), 6075-6101.