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?
Paper wallets are probably the safest or one of the safest at least , but they are created mostly to store for long term and not to use them really ... for daily use you can use something like Desktop wallet (e.g Electrum) .
On paper wallets you basically print both private keys and public keys (with QR code) , you can encrypt private keys if you want , if not .. to use your BTC you can scan the QR code and import the private keys to a wallet like blockchain.info or simply re-type the private keys form the paper wallet to blockchain.info .
Or you have hardware wallets such as trezor wallet or Case wallet (which is considered the safest bitcoin wallet on the world and the easiest to use) , it's basically Biometric and multi signature on the same time . Never used them though so can't say much about them .