At first I was so confused on how to use those different tools and how to combine images. However, I watched some tutorials on youtube and just played around with the tools to finally learn to use it properly. I struggled the most on figuring out how to separate/cut an image and to form a new one. The most useful tools for me were the magic eraser tool and the quick selection tool.
It was challenging to work on photoshop, but at the same time it was fun and addicting. I hope to learn how to use other tools to create more works on photoshop!