Hello and welcome to BYC. You found an Amazing Poultry Community to be a part of, with many knowledgeable members who are willing to help you along your journey with any questions you may have. Enjoy
Welcome to BYC!!! If you can take in a stray, that's awesome! He'll be such a lucky boy! You can easily buy basic care stuff at a farm store like Tractor Supply or something. You can buy nice small bags and feed and such if you only keep him temporarily. Make sure you keep him in a place predators can't get him and such during the day like hawks and overnight like raccoons and coyotes and such depending on where you live. Good luck!