What I used was Bitcoin-QT. My friend sent me a small fraction of bitcoin to test it and then I sent it back which worked fine. So this wallet is empty.
So all I have to do is delete the wallet.dat file and dl again and start all new. For now I will not need the treasure wallet because I have nothing yet, but once I get going I would like to buy to invest and then is when that will come about. I did read about having a paper wallet you mentioned and will have to read more of it. I even thought of just dl the bitcoin-qt again but in an external drive and that way will not need a computer to have it sit.
Bitcoin-Qt stores the wallet and blockchain in the default user location regardless of where you install the program. You would need to use the -datadir command-line option to specify a different location, however, it sounds like you would do best to install the software in the default location and leave it alone. Simply back up your wallet using the file menu option after you have encrypted it, and before receiving any significant Bitcoin amounts.