You probably have heard that but it is always great to refresh your knowledge - secure your funds. You probably have seen/heard all of the news about exchanges getting hacked. Exchanges are not secure. If you are going for the long term strategy, you should use a wallet or a secure device to keep your crypto. There are plenty of hardware wallets but for the sake of convenience, I suggest you check out BitWings and their Wings WX smartphone. Their phones are specially created for crypto people. They are using neural technology, biometric scanning, and cryptography to secure the phone. It should also mine 2 ETH per month, so that's awesome.