Back in the Stone Ages of the early 1980's, when I was an Elementary Education major in college, one of things we had to do was assemble and maintain a "teaching file". We began this file in our first education class our sophomore year and it was graded both then and before we began our student teaching at the end of our senior year. We sent off for materials companies offered to teachers, we made folders for projects we did in various classes and copied or clipped articles from teaching magazines. All of these things were kept in what I could now call a file box.
I don't know if my university still requires "teacher files" but I'll bet if they do, many of the contents today's students collect are digital, not paper. I'll also bet that like Girl Scout leaders, teachers find many of their resources online. This article is to give you some ideas/techniques for finding, keeping and sharing resources on the internet.
As GSUSAs resources are covered elsewhere on this blog, this article will focus on other resources.