The Gothamist, a robust independent New York City online news source, published a comprehensive guide for helping cats. It’s locally oriented but is applicable almost anywhere. I’m linking it here because it can save some lives and make others better.
“So many New York City cats end up in shelters because people don’t know what to do when they see a cat roaming around outside. To celebrate Adopt-A-Cat month, we made a comic to help New Yorkers understand city cats better. Keep scrolling to learn about what to do if you see a community cat, a lost or feral cat, or a whole bunch of adorable kittens!” — The Gothamist