Actually if it's pure text, it will compress way more than 2x. In fact, the reason that manufacturers often advertise that number is that binary (executable) type files barely compress if at all, but together with the text files that compress at 10x they can get away with saying it's 2x if the average user has a LOT of data files.

Anyway, I agree with all the posts thus far... shrink it down. Even using a lot of images and maybe even a little video, 1GB is a lot of storage.

Nice idea... I look forward to your product. Make sure you put a nice legal statement clearing yourself of any liability for following your instructions and be sure to quote sources (bibliography) such as Red Cross, ETS, etc. and provide links to any content you include in this manner. You probably also want to review the different Open Source documentation release copyright(left) type of release - http://www.gnu.org/licenses/license-list.html#DocumentationLicenses