I use Photoshop Elements 7.0, both at work on PC and at home on Mac. I know Victoria_Lee meant well, but her advice about PSE is - sorry - plain wrong!

Photoshop Elements is intended for artistic / design work just the same as the full Photoshop - it just does not include all the bells and whistles. It is great for hobbyists, and a good introduction to the full product if ever you might want to upgrade. It can open any .psd file that the full version can create, it supports layers, layer masks, adjustment layers, brushes, a whole raft of artistic filters and effects, masking and selection tools, RGB level adjustment, alpha channels..... need i go on, because I could!

Photoshop Elements is not designed for video editing, that is another Adobe product that I can't remember the name of.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)