Three photos have each been modified in Photoshop to show: conversion from color to black and white (I found using the presets worked well; adjusting levels of black and white pixels (the sunset picture required no adjustment); adjusting the curve for lightness/darkness in the drawing (The software would not let me perform step #7 in Tutorial 1.3 to make specific areas of the photo lighter or darker); adjusting red/blue/green colors to make the photo "pop"; and the effect of dodging/burning tools.
I also have posted a version of each photo that uses a combination of layers from Photoshop that seemed to work best to enhance the photo.
Going through this exercise educated me on my camera, a Canon PhotoShot A590IS. I started to read the manual after having it for five years. I still have a way to go since the instructions are in a 200+ page booklet. Using Photoshop also helped me understand how I could take a better photo in the first place, and reduce the need to modify it.