The most common method is, of course, MyEtherWallet, but it is also the most unreliable option. Because your tokens are protected only with a private key. A good solution is hardware wallets
Many are disappointed with those attacks and phishing incidents on that wallet though its still the best option for some because its the easiest wallet to use.
There's also a good progress and they are now working on their mobile app which can add confidence and can make them reliable somehow.
MyEtherWallet.com Mobile app [Working in Progress]