Adobe Creative Cloud Express allows non-designers to create professional multimedia content
The base app is free, with a $10 premium tier that adds more assets and features
While many professionals swear by Adobe Photoshop, others find it a bit overkill, and that also goes for the subscription. If you're among the latter, you should try some of these alternative photo editing tools.
Monitor calibration is very important to a creative professional's workflow, but pretty much anyone can benefit from it. Calibration will deliver color accuracy and correct problems with white balance, gamma, and oversaturation. It'll also help color matching multiple monitors for a consistent experience.