That's probably what I would do too. I would head over to the prospectors' den and use that as my living quarters. Then I would go out prospecting during the day and then trade with merchants or the other prospectors living in the den in order to get food, water, and other supplies. I would probably end up travelling into the NCR at some point, where I would attempt to learn some history in order to fill in the blanks about what had happened before the Great War as well as what had happened in the time frame between the different games.