> I'm very new to photoshop as you will tell from my
> questions, I was wondering if someone could let me know
> the steps to achieving the following 3 things :
Photoshop can be overwhelming when you are just beginning. Hope this helps you get started.
> 1. Placing one picture ontop of another
Learn to use layers. You can copy another image on top of the first by copying it to the clipboard and pasting it to the other image. How it interacts with the other layers or background depends on the selected blend mode and opacity.
> 2. Cutting a picture out (ie : cutting part of a pic
> away from its background).
There are many ways to do it in Photoshop. First you should promote the background to a layer by double clicking it in the layer palette. Then you can use the eraser tools to selectively erase from the background. Or use selection tools such as the magnetic lasso to select the subject, then copy and paste it to another layer (delete the original or set it to be invisible). Or learn to use a layer mask to mask out the background (nice because it is easily reversed or revised at a later date - other methods are less forgiving, but within the same editing session the history brush is available). Or learn to use the extract filter.
> 3. Changing the colour of a certain part of a picture.
One easy way is: select the part you want to change (e.g., with one of the lasso tools), then adjust the Hue, Saturation and Lightness of the selection.
Regards,
Sheri