SOOOO many resources out there. Anons do what they do best , research.
Start with where you are for those who haven't made the leap yet. Try some simple stuff, like
container gardening maybe. Make bread for real. build a backyard fireplace or a coffee can stove.
Research research research. see if there's a local farmers market. Lot of homesteaders, off grid folks there. Face to face you learn a lot.
Good luck to all. You're never too old or sick, or poor to make the change to go off the company store, and reclaim your soul.
Look for The Place.
Undeveloped or existing homestead? Rural or Remote?