How will I heat my home? Wood, obviously.
How do I provide light and electricity? Candles or kerosene lamps...a solar panel to charge batteries and to power the ventilation fan to exchange the air in your (hopefully) earth-sheltered home.
What do I have to offer others? That won't be a concern for quite awhile, assuming you live that long.
How do I pay for this? Your problem. No time like the present to start planning.
I would strongly suggest heating with propane for the first week or so - then switch to wood. If it's -60 degrees - within a week anyone without wood or propane will be dead.