The best way to create bitcoin wallet is to go on adroid or iPhone store and download Bitcoin wallet,believe me that is the safest way, that's what i use.Just give it a try,and if you don't like it dont use it.
Using a wallet on your mobile phone is definitely a good choice if we're talking about ease-of-use, but since OP was mostly referring to having a safe way of storing his/her bitcoin, the best choice here is probably simply getting a hardware wallet like the Trezor[1] or the Ledger Nano S[2]; or a paper wallet if you know what you're doing.
[1]
https://trezor.io/[2]
https://ledger.com/