You deleted everything from your USB key or a drive, so there should be enough free space to copy the new files, but you still get the not enough free space message in Mac OS X? This is what you need to do.
You got a .rar file and you don't how to open it, some one asked you to send him "a rar file" or you just need a good archiving software? Download and install WinRAR.
A simple Dreamweaver HTML tutorial where we change the shape of a mouse pointer/cursor on a link or image rollover on a website using a CSS style property.
You don't need Photoshop or some other advanced piece of software to resize a large number of images at once. You can use Microsoft Office Picture Manager which is part of the Office suite.
With Google drawings you can easily create, share, and edit drawings online. You can insert drawings into other Google documents, spreadsheets, or presentations.