Buy, hold and wait a long time. Hopefully you still have access to your hard drive and remember your password, when BTC hits 100,000 a coin
Well this was the classic advice I see everywhere and I do agree on this, personally I am holding right now. Anyways I think storing your bitcoins on your hard drive for a long time is not a good idea, holding your bitcoins on a paper wallet instead will be a better idea
Yeah Saving in paper wallet is good idea instead of saving in harddrive It will not get corrupt. Investment part I would say save and buy the bitcoin when the price is less and sell and invest on anything When its rate goes to high value.