You said what everybody knows. Actually, there are many free tutorials online, you can find them to learn how to use PS. At last, best wishes for you, hope you'll be a PS expert.
There is no "Get It Quick!" for this wonderful tool. To really get comfortable in Photoshop you are going to need to use it. One of the easiest and free ways to learn are the 1000's of tutorials available online. Check out these sites to get started: Good-tutorials Photoshoptutorials.ws
I found http://psd.tutsplus.com/ useful when I was still new to Photoshop. Now I am not an expert but I know how to get around
I think compared with online video, going to lessons with the help of a teacher will be better. In addition, you need to do exercise frequently, or you will forget them just like me
look for the knowledge of it learn it and practice it, and do it continuously till you become an expert..
You can collect a Photoshop in the market, and also collect a tutorial Book or CD/DVD, After all you need your self good try.
learn through the tutor videos available on youtube... and just practice... and do some projects you will become the expert...