1. Adobe Photoshop
If you're looking to pursue a more creative career, such as photo editing or graphic design, a basic knowledge of Photoshop is usually a requirement. This course comprises 88 short lectures that will teach you everything from sharpening images to layering techniques.
Mastering Adobe Photoshop CC, $10 (originally $50), available at Udemy. [80% off with code 'LEARNFEST']