If you want to learn photoshop or just use it once in a while you can download CS2 for free from the adobe website. It's old but still more than good enough for most people.
*link removed*
Really? Cause it's not mentioned on the page and they provide the software + serial which works. I thought it was a smart move on getting you hooked in the hope you would buy a newer version later instead of using a free alternative like GIMP, Paint.net, etc...