Once of the biggest hang-ups people seem to run into is the concept of layers. In photoshop layers are abstract and infinite. In gimp they are explicit and fini

Once of the biggest hang-ups people seem to run into is the concept of layers. In photoshop layers are abstract and infinite. In gimp they are explicit and finite. In gimp a layer has size, that may or may not match the image size. They can be scaled, resized, cropped, etc independent of any such transforms to the image itself. Differences in workflow themselves are usually not hard to overcome. It's the conceptual paradigm the lies beneath the workflow that people have to wrap their heads around in order to understand _why_ a workflow is different.