"Trezor" is not as good as others, I would not recommend it. If you use iPhone (which I recommend for security reasons) the best wallet I recommend is "Breadwallet", which I also use. You can also see wallets ratings here and make your own decision: https://bitcoin.org/en/choose-your-wallet -- Here you can watch a "Breadwallet" presentation video: http://prisonorfreedom.com/ios-native-bitcoin-breadwallet-comprehensive-review-testing/ -- Please be prudent and educate yourself first, it is a dangerous environment...