Presets are basically a saved series of photo adjustments that you can then apply to any image.
Rather than create a myriad of links in the sidebar I thought it best to create a post and then add the links as I find them
How to install presets
Preset Heaven examples1. Vintage Presets
2. Starter Preset - greater contrast
3. Diving Preset
4. Holga Presets in a variety of shades - Holga was the name of a Chinese camera that had a history from 1981, a medium format 120 film toy camera known for its low-fidelity aesthetic.
5. Old Touch Preset
6. Magic Hour Preset
7. Bedtime - Turn day into night
Dramatic Sky Preset
Wonderland Presets - 14 free presets with Color Isolation
LRB Dragan Grunge type Presets - an HDR type effect