Most people are BASIC and use coinbase but you can buy hardware wallet if you're gonna store a lot of coins one of them is Trezor.
Right now is not a good time to invest in alt coins at the moment because a lot of them is going down but wait till you see them going back up and invest.
Also you shouldn't invest in the same altcoins other people invest in because it could be a flop and there goes your money, you should invest in your own coins you think are gonna go up and on your own analytics.