If you are newer to crypto, a good mobile wallet like the samourai is a good option as you'll have access to your coins on your phone, but will still have responsibility for your own private keys. Once you get a little more familiar with transactions and accumulate a larger quantity of coins, you can and should invest in a hardware wallet like the trezor or nano-s.  It's alright to have both types, the hardware wallet is just the optimal choice for security while a mobile or desktop wallet is best for convenience and typically beginner-friendly UI.