UVic Libraries holds many journal titles on research methods, below is a sampling of some relevant titles. Be sure to do your own catalogue search for additional titles.
There are many videos about Grounded Theory on youtube. This one with Kathy Charmaz particularly good. It was recorded at the 2012 Conference of the British Sociological Association and posted on their youtube channel. Kathy Charmaz is a Professor of Sociology and the Director of the Faculty Writing Program at Sonoma State University and a leading scholar in Grounded Theory.