In order to buy Bitcoins, you first need to create a storage site for your Bitcoins, and this is the first step to purchasing Bitcoin. Currently, there are two ways you can store Bitcoins online:  Store the keys to your Bitcoins in an online wallet. The wallet is a computer file that will store your money, similar to a real wallet. You can create a wallet by installing the Bitcoin client, which is software which powers the currency. However, if your computer is hacked by a virus or hackers or if you misplace the files, you may lose your Bitcoins. Always back up your wallet to an external hard drive to avoid losing your Bitcoins. Store your Bitcoins via a third party. You can also create a wallet by using an online wallet via a third party site like Coinbase or blockchain.info, which will store your Bitcoins in the cloud. This is easier to set up, but you will be trusting a third party with your Bitcoins. These sites are two of the larger and more reliable third party sites, but there are no guarantees about the security of these sites. One of the most popular and cheapest options for keeping your Bitcoins safe is a paper wallet. The wallet is small, compact, and made of paper that has a code. One of the benefits of a paper wallet is the private keys to the wallet are not stored digitally. So it cannot be subject to cyber attacks or hardware failures.  Several online sites offer paper Bitcoin wallet services. They can generate a Bitcoin address for you and create an image containing two QR codes. One is the public address you can use to receive Bitcoins and the other is a private key, which you can use to spend Bitcoins stored at that address. The image is printed on a long piece of paper that you can then fold in half and carry with you. Hard-wire wallets are very limited in number and can be difficult to acquire. They are dedicated devices that can hold private keys electronically and facility payments. Hard-wire wallets are usually small and compact and some are shaped like USB sticks.  The Trezor hard-wire...

How would you rephrase that briefly using Vietnamese?
Lưu giữ Bitcoin trực tuyến. Tạo ví giấy để giữ Bitcoin. Sử dụng ví cứng để lưu giữ Bitcoin.