It’s a no-brainer to keep your cats inside in an area full of predators like coyotes, raccoons and free-roaming dogs. However, we do support outside time for your cat if it’s safe and supervised. Here are some resources for that.
How to walk your cat on a leash: Cats are not born knowing how to do this! It’s a behavior that needs to be taught. From our feline behavior consultant, Melissa Shandley, great instructions for how to make this a happy experience.
Catio Help: We highly recommend giving your cat fresh air and sunshine by building your cat a safe outdoor enclosure.
Outdoor Enclosure Examples from Jackson Galaxy
Spoil Your Cat Rotten with a Catio from the Animal Rescue Site

Clicker Cheat Sheet
Books
Cat Food: Raw Food Recommendations
Clicker Training Basics
TNRCare: helping outside cats & kittens