You can transform visual reality completely. Photoshop work generally falls into these main categories:
1. Retouching
2. Compositing
3. Web page layout
Retouching means making small visual adjustments to colour, brightness and contrast so that an image looks better. Compositing means combining two or more photos into a single image. This new image should generally look like it was a single photo, even though it is made of multiple photos. Good compositing is a complex technical and creative skill. Photoshop is a popular choice for laying out web pages because its basic unit of measurement is the pixel, which is how web pages are generally measured.
How long will it take to learn Photoshop?
That depends what you want to do with Photoshop. Learning basic retouching skills can take around six to 12 hours, while learning compositing skills can take 12 to 24 hours, depending on your goals. Learning Photoshop for web page layout will take around six to 12 hours.