I agree with you on crypto-currency. I would suggest a little Bitcoin for starters, just to learn how to use a wallet, and secure your funds. Then read up on DASH, Monero, and ZCash... all of which have anonymizing built in, so people cannot track your net-worth (in crypto). DASH is nearing their release of the Evolution wallet, which will take crypto-currency ownership out of the techno world into the mainstream, and will see a big bump in value.