I recommend you use MetaMask Ethereum wallet. What I mean here is after you create your wallet at MyEtherWallet.com you will open or move to MetaMask. If you do that it will give you 3 benefits as explained here, https://myetherwallet.github.io/knowledge-base/migration/moving-from-private-key-to-metamask.html... if you're too lazy to open the link it's below...
2. It is by far the fastest, easiest way to unlock your wallet via MyEtherWallet.com & completely free. You just click a button. No more searching for keys or keystore files!
3. MetaMask will block you w/ a big red warning if you go to a malicious site found on our blacklists. Look at all these crypto phishing websites!
HOW TO: Use MetaMask Ethereum Wallet (In Under 5 Minutes) - https://www.youtube.com/watch?v=2YeyTF5lalE