Maynard...as for storing crap, you have pretty much 4 options:
1) Companions. Let them lug your heavy shit around, and then grab it back before selling it.
2) The Mojave Courier boxes. There are about 15 of these in different locations. If you put your stuff in one, you go to another one and the stuff will be there. Pretty handy for early game stuff.
3) Your house(s). So far I have a room in Novac and a suite in the Lucky 38. You can upgrade your suite to put crap in it, like FO3.
4) Find a spot you're comfortable you remember, and put stuff in a locker, dumpster or whatever. This option is a little more sketchy, but if you can remember where you put stuff, it works.
There is so much stuff to do in this game, it's daunting. I'm 22 hours in now and level 14 and barely scratched the surface of questing. I've finally gotten to the point where I'm picking up good weapons, but it seems like weapons are way harder to find than in FO3.