Communication—Telegram for open source messaging, and a degoogled Android phone. Mesh networks?

Food—grow your own, and most importantly, keep livestock. Even just have a family flock of chickens goes a long way. Animals are a low- or even no-input source of protein and essential for good soil fertility.

Manufacturing—get a 3D printer and learn to make it useful.

Money—learn how securely earn, save, and transact with Bitcoin.

Transportation—having as much of your needs within walking distance is ideal. Being able to keep bikes running is a huge boon to freedom. For vehicles, your best current option is being able to keep a diesel engine running and make biodiesel.

What else can I add?