I love Pearl Trees for curating digital tools. Just thought I would share a few curated resources for you, from my folder of Digital Fluency Tools.
If you are interested in using curating or Social Bookmarking tools, there is Livebinders, Delicious, Diigo... all are free.
As you can see from my post, I have embedded the Pearl tree.
21st Century Essential Skills Resources, by jstewiestewie