HOW TO HOLD COINS IN 2018?
what ever year it is, there are simple thing to do.
1. invest in ICO or buy in market.
2. transfer in to wallet like MEW if it is ERC20 or NOEN if nep5
3. if you want to have more security, you keep it in offline wallet like trezor!
4. leave it there and forget you have it for a long time.
I see that your first one is right and it will be profitable. But we need knowledge. If only for storage then we need a purse. Or we can hold a long term coin such as BTC, ETH, NEO, XRP. We are the most potential currencies.