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.