Hello.
It was just a bit too late in night when (atleast in european time :p ) so I think that's why nobody responded.
Basically, what you are playing now is a beta version of the game, open for other players to test, to play etc.
That's why there aren't that much quests implemented yet, the devs have to implement and work around the basic stuff, f.e. the economy, the crafting system, the combat system etc. before inserting "serious" stuff like huge quests etc.
That's all done in their freetime, and I have to say that a lot already happened (very few new features etc) since I play the beta (last year august) - so yes, you're right, they did an awesome job.
Currently the game is very much pvp oriented (I hope it will change a bit in the future), the towns in the north of the worldmap (Klamath, Redding, Den, Modoc etc) became warzones where gangfights happen all the time. So no good place for newbies, or people who dont like pvp. For starters, I recommend reading that
http://www.fo2238.fodev.net/wiki/Getting_Started . Best place where you mostly are safe is the NCR (also the most crowded city), go to the brahmin pens, talk to the herdsmen and shovel some brahmin crap for him. For each piece of shit you get 10 xp and a few caps. When you reach 100 caps, go to the inner city in the NCR and open a bank account where you could store your caps..
Then the best you can do is wander around on the worldmap a bit and try to find some brahmin. Try to kill them, and loot them. When you have 10 brahmin hides, you can build your own tent, to store things etc. There is no "best way" to xp, for me a mix of crafting, "PvE" and healing is a good way of getting xp, but everyone has his own way.
Try to read the wiki carefully, there are a lot of informations there. But you can also ask here for further questions, I understand that it's a bit hard for beginners.