Method 1: Seach for a reputable online spot exchange and open an account to purchase cryptocurrencies. Please note that exchanges require real-name certification （KYC - Know Your Client). So to open an account, you need to prepare the following items:
1) ID card
2) Bank Card
3) Mobile phone number
4) Email address
An account opening process is very simple, it works much in the same way as most account registrations do.
Method 2: Buy a mining machine yourself and start “mining”, that is, the process of producing Bitcoin plus earning a transaction fee.
Method 3: Over-the-counter trading, you can find someone who is willing to sell Bitcoin (P2P, Peer to Peer transaction), pay the money directly, and then he sends you Bitcoin to your personal wallet address. This eliminates the exchange account opening process.
Method 4: Slowly earn a substantial amount of Bitcoins for free through Bitcoin faucets, like playing mobile or online games, completing tasks on websites, or writing analysis about Cryptocurrency.