Google Applications
Google Apps is a collection of web-based programs and file storage that run in a web browser. The applications include communication tools (Gmail, Google Talk, and Google Calendar), productivity tools (Google Docs: text files, spreadsheets, and presentations), a customizable start page (iGoogle), and Google Sites (to develop web pages). Google stores all of the files and content centrally and keeps a record of the different versions of a file. With Google Apps, sharing content is as simple as granting someone access, which facilitates collaboration, peer review of academic materials, and the collective generation of knowledge.
The "7 Things You Should Know About..." series from the EDUCAUSE Learning Initiative (ELI) provides concise information on emerging learning technologies. Each brief focuses on a single technology and describes what it is, where it is going, and why it matters to teaching and learning. Use these briefs for a no-jargon, quick overview of a topic and share them with time-pressed colleagues. (Source: http://www.educause.edu/ELI/7ThingsYouShouldKnowAboutGoogl/162758)
This source includes a very good resource sheet on using Google Apps

Google Docs and Spreadsheets


Why use Google Docs and Spreadsheets in Education?
http://technology-escapades.net/GDS/player.html - a mashup outlining the benefits of collaborative work and google docs and spreadsheets

Google Wave - the next big thing in google land.

Warning: You will need to be a keen fan of google apps to watch this video - goes for 1 hour 20 mins.