If you leave your computer running on a 24/7 basis you might be interested in determining the amount of uptime that has accumulated since the last reboot.
Pretty simple and useful tutorial, where you will open a random photograph with smoke and convert it into something really not friendly for our environment.
With time it can happen you have a bunch of installed apps on your Windows Phone 8 powered phone you never use anymore, I suggest you to remove them to free some of the storage.
Google Spreadsheets supports cell formulas typically found in most desktop spreadsheet packages. In this lesson we will calculate the numbers of empty cells in a Spreadsheet.