Photoshop is similar to Illustrator as they both use images, but there are different tools, in photoshop, we put pictures on top of each other, and added effects, we learned to use a mask layer, how to make a brush, and to use the free transform tool.
These are pictures made using the magic wand tool, which is pretty much greenscreen, it selects the part of the image that has a drastically different color. You can change the tolerance (higher means more pixels get selected, lower means less)
This is a picture of Keanu Reeves, a famous actor, but with his facial features replaced with a dog.
We learned to use the free transform tool to flip, rotate, and change the size of images. The bird is put on a picture of a mirror, flipped, and put inside the mirror so that it looks like the bird is looking at itself in the mirror.