You can use Google Docs to create, share and collaborate on documents, spreadsheets, and presentations. You also can edit existing documents that you have uploaded and export/download documents into various file types.
Click on the pull-down arrow on the “create new” button and choose the type of file you want to work on.
With the exception of document sharing, most of the features in Google Word Processing and Presentation documents are very similar to Word.
Most key differences can be found in the "file" menu which is similar for all Google Docs
From the file menu you can: