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.
If you are bored of your Facebook cover image on your Timeline profile and you want to make one of your own this easy to follow Photoshop tutorial will do the trick.
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.