Gimp Transparent Background Canvas. If you never changed the shortcut key settings you can also use control shift n to open up the new layer popup. For instance if you put.
I usually use the magic wand fuzzy select select contiguous region tool or the select. You can repeat this process for multiple photos if you want to layer the transparent image over a non transparent one. Basically gimp make background transparent.
Under layers select new layer.
In the drop down menu select an image to open and click open. Alright so on to the ultimate question. Click file in the top left corner of the window windows or the screen mac then click open. Select the appropriate selection tool from the tool window or the tools selection tools menu on the layer window.