This tutorial was requested by noody_kittin
Hope this helps! :)
Step 1:
Create a new layer on your canvas.
Step 2:
Go to the Drawing or Shape tool (the yellow one with the square and circle above the blue triangle sort of thing). Uncheck the box that says 'Fill Shape' and choose your border size. You can choose the border color from the color palette IN THE TOOLBOX, NOT FROM THE ONE ON TOP.
Step 3:
On the new layer you created, just drag the tool into the shape and size you want and you're done! :)
More tutorials are on the way ;)
