Myetherwallet is a good start. You can make a wallet on there and store ERC20 in that wallet as well. I would really recommend getting a hardware wallet like Trezor or Nanoledger though, you can use hardware wallets on Myeterwallet to store ERC20's and it's much more secure to store your crypto offline than it is online.
If you are going to use Myetherwallet, you can use it offline for increased security. Check this:
https://myetherwallet.github.io/knowledge-base/offline/running-myetherwallet-locally.html