Step by step how to use adobe photoshop
First Open Adobe Photoshop CS3
Go to the top left and click on "File"
Make a new canvas and the "Tools Bar" will be on the left and you will find the "Brush Tool" and many other tools here. You will use this to make random things or edit photos.
To put a photo on the Canvas which is the white, or black and white checkered board thing in the middle of the screen, all you need to do is drag a photo onto it or go to File, Import, and it should say either Picture or Image or something of that sort. Then it will appear on the canvas.
If you need any editing tips just ask :)