Google Drive
Getting Started...
Google Docs can be stored online and shared with your students. They can be used to create your assignment as well as for the outline and rubric for the assignment. Additionally, you can easily collaborate with a colleague and work on the document together in real-time. As well, you can keep samples of a variety of student work and show students exemplars to give them an idea of the expectations in class.
Get in Drive!
Some help to get you started with Google Drive

GooEd: Get in Drive: Part 1 - Meet the New Drive

GooEd: Get in Drive: Part 2 - Getting Around in Google Drive

GooEd: Get in Drive : Part 3 - Folders & Files: Creating, Moving, Sharing and Searching