1. How cloud computer different from normal computer?
 Answer Cloud computer has free space for user to add their own files and their information. Moreover, users can get their files from different computers because these files are shared on the Internet.

2. How to turn classroom computing to cloud computing?
 Answer You have to register in Google or Yahoo and create your document. For example, Google Document. When teacher create classroom's page,you can look it up and you also can edit it.