If you are mostly using only one resample image option when resizing images, then you can change the default option to the option you are using the most.
If you don't want others to use your photos and images without your permission, you can create a so called custom watermark with your name or any other text you want.
Fun, yet very useful tutorial, where you manipulate a photo in a way it will look like you're standing next to Brad Pitt or any other person in that matter.
Let's design a stylish and transparent discount label you can then use for an online shop website, posters and similar media you want to advertise a discount on, using Photoshop.