Cutting with the Polygonal Lasso Tool
In this tutorial we are going to learn to cut around an object in photoshop.
First get your image you want to cut around.
Thats only for a sample, your image may not have a plain background.
Now select the 'Polygonal Lasso Tool'
Then start going around the image you wish to cut out. Zoom in to make this easier.
Now because we want to delete the background and not the image we will have to inverse our selection. Click Select > Inverse
Notice the background is now selected like below.
Now select the 'Eraser Tool'.
Go all over the background but don't worry about going over the picture you wish to keep as it will on delete the background.
Now press Ctrl + D to deselect and you will end up with something like this.