Dropbox is a file storage program with an direct available storage of 2gb.
It wil be installed on your home pc and then you can acces the files anywhere you want.
The map public can be used for sharing files on the internet, just place the file in the public map use the right mouse button/dropbox/get url and with this url you can share the file, (also when your pc is offline)
By inviting new users you can upgrade to max, 3 gb free online storage.
visit the site for creating an account.

https://www.dropbox.com