Google Drive
Learn what's it's like to Go Google!
Sharing limits- 
You can explicitly share a doc or file with 200 viewers and editors.
Only 50 people can edit and view a document, spreadsheet, presentation, or drawing at the same time. Additional viewers will still be able to preview the item, but they won't be able to edit it, and they won't be visible to others working on the item.
Functions available in Google Spreadsheets
Each spreadsheet can be up to 256 columns, 200,000 cells, or 100 sheets, whichever is reached first, to be converted to Google Docs format. There's no limit on rows.

Understanding Charts and Gadgets in Google Spreadsheets
Links for More Learning:

Variety of Google Data Collection Question Types
10 Google Forms for the Classroom

3 Getting Started Guides for Beginners
A Great Comparison of all Google Docs components
Digital Toolbox: Google Docs
10 Google Forms Ideas for the classroom - 
Using Google Docs in the Classroom: Tips and Tricks
20 Ways To Use Google Docs in the Classroom
Google Docs Classroom Ideas Wiki
Subpages (1): Google Forms