Thomas Knoll, a PHD student at Michigan University began writing a program on his Macintosh Plus to display grayscale images on a black and white display. This program then caught the attention of John Knoll, his brother, who recommend that Thomas turn it into a full image-editing program. Thomas took six months in 1988 to work on the program with his brother. Later on within the year, he named his program ‘Photoshop’ and later released Photoshop 1.0 on 19th February 1990.
Brayde_Simpson found a video tutorial for professional editing. This could be helpful for those who want to expand their editing skills within Adobe Photoshop.