I guess you can use blockchain.info. It is a perfectly secure wallet. Dont keep your Bitcoin on you desktop or you might get burned.
If you decide to use the blockchain wallet, you will need to have 2FA activated. Only by having the 2FA activated your account will be secure.
On the contrary, you would get burnt even more badly when using blockchain.info.
Firstly, 2FA protects only against client side attacks. When using it, Blockchain.info only allows encrypted wallet files to be downloaded if the 2FA is correct. However, their employees would have access to the encrypted wallet if they have access to the server. If you use a weak password or they use weak encryption, your coins can be stolen. Their security track record already indicates how trustable they are.
As the title says, where can I store my btc safely? Like a cold storage or something, but i dont get the idea of it... Also when it is safe, I want to deposit to it, is that possible?
Definitely Coinbase. I've been using it for a year or so now and have no problem with it.
It's secure and very easy to use. Has "My Vault" aside from "My Wallet" for safer storage.
Coinbase vaults does not allow users to have control over their address. This means that if they are offline, you won't be able to get your Bitcoins back. Your best bet is to use multisig vault with "Managing the security myself" option.