Buy a Labatory (If you did not blow up megaton, Moira brown in craterside supply will sell it. If you did blow up megaton go to tenpenny tower and look for the shop, its on the bottom floor)and go to your house. Press A on it you will have 2 options, the 1st is create a new compound and the second is De-toxify yourself. Choose create a new compound then wait 24 hours click back on it and it will say (whatever the chem is called). You can do this as many times as you want. Some of the chems you get are Buffout,Med-x,Stimpak,Rad-x

1)First, go to Rivit city or megaton,ect. Then, go to a vendor and see if he has two of the same guns. If he does,(2)buy the one with the least condition.(this also works on clothes.)Then sell it back,(you with get less money than you bought it for,I know.)and buy it again.(3)Look at the condition,it should have maxed out condition,if it dosnt,reapeat step two.When it has full cnd,sell it for lots o' money!Keep doing this until the vendor is out of caps,then go to another.Enjoy!NOTE:vendors caps are refilled every day.