Cutting Out V1
I own full rights to this tutorial and the previews. Courtesy of Plasteeq!
Have your image open. Now go to the Polygon Lasso Tool.
Match your Polygon Lasso Tool settings to mine.
Zoom into your image, I zoomed in to 300%. Then start clicking around the site model's figure until you reach your original starting point again.
Once you've reached the starting point your selection should have animated dashed lines going around it, see image below.
Go to 'Select > Inverse'
Your selection should now look like this, press the 'delete' key on your keyboard to delete the background. Then go to 'Select > Deselect' to deselect the selection.
Here's my result.