Spreadsheets
Google Spreadsheets are similar to Microsoft Excel. Many of the same features that you know are similar in Google Spreadsheets. Additionally Google Spreadsheets:Allows for synchronous editing by multiple authors.
Allows for threaded discussion and detailed revision histories.
Is able to integrate with web based data sets and tools
Has powerful scripts for Automating Tasks
Is easily published to the web
Autosaves.
Below are some great tutorials and content to help you get started.