You can install Bitcasa on your PC or on your mobile device to synchronize files as you save them. It is also available for Mac and Linux users. After installing Bitcasa you’ll see it as a separate drive which you can access like other drives on your device. You can sign up from the web interface or from within the software after it is installed.
Related: 15 GB free storage by Google Drive
You can make videos of your desktop screen to show how to use a program or you can just create a little video to help your friend fix some problem with his PC. You can upload those videos to YouTube or any other video sharing websites. For years people are using camtasia studio for recording desktop screen videos because it is really wonderful but costs $299. Like every other program this program also got too much free alternatives that can give you best features you need.