That depends on where you want to live an how you want to live.

Land prices vary widely.

Ive taken a couple runs at writing something universal, and it just doesnt exist. This kind of thing varies so widely based on where you want to live, how you are comfortable living, etc.

But if I was young and single, i might try something like this...

buy and build out a van to live in. not fancy, functional, with everything. power, water, simple compost toilet, everything you need. then i would buy the land. the van serves as a way to live on the land immediately if you want to, or enables you to spend blocks of time on it as you figure it out.

it also enables you to just leave for a period of time if you have to.

There are a bunch of ways to do this. But the most important thing IMO about living like this is finding a place where you wont be bothered. That means counties that are more lenient, or have a small enforcement budget. meaning, they dont bother people unless there is a complaint. which leads to the next important factor... neighbors. if your neighbors are freedom lovers, and you dont live in a high traffic area, you can do alot without being bothered. this is key.

Living off grid is not hard now, systems being what they are. The hard part is avoiding the bureaucracy.

Living off the land is possible, but requires pretty serious dedication. The real art form would be finding a way for the land to pay for itself. I think a combination of part time work, or seasonal work is not a bad way to go. We have been surprised how little is actually needed to live comfortably. Alot of what you think you need, you dont. And there is great freedom in simplicity.

If you have more specific questions, i can take a shot at answering them.