Photography has been a tech-heavy career field since its beginnings in the 19th century. Whatever camera you use, you will be a better photographer when you know and master all its options – shutters, lenses, flash, everything.
In the 21st century, photographic tech includes software. Editing and cropping photos have always been a way to turn ho-hum shots into something special. Mastering editing software is the way to make the photo you took into the one your customer wants. Like tutorials on how to take good photos, there is no shortage of free instruction on how to edit them. You will have to pay for a photo-editing program that is good enough for a pro.
If you have to print out photos, you will need to become familiar with how your printer translates digital images. It may take practice before you know whether an image that looks great as pixels will look equally cool in hard copy.