The first step is to create a Box.net account. Pricing ranges from free (for a single user and 1 GB of storage) to US$19.95 for 15 GB and up to five sub-users. Once that's done, download the free Box.net app from iTunes and install. You're now ready to upload, edit, and share a variety of documents, particularly those which would be impractical — if not impossible — to email. (Note: the "edit" part is limited tophotos and images with Picnik, and Word and Excel files using Zoho.)
If you opt for one of the paid subscriptions, Box.net gives you fourteen days to try them out before they begin charging you. And even if you don't have an iPhone, Box.net's web-based system still makes it an attractive way to access and share documents from just about anywhere with Web service.
[Download from the iTunes Store]