1. Use chrome browser
2. Install MetaMask Extension: https://metamask.io/
3. After installation, open MetaMask, click on the top to switch the network menu, Ropsten Test Net, and register an account
4. Click the Buy button again, it will jump to https://faucet.metamask.io/ , and then click "request 1 ether from faucet" several times, each time you click will give you 1 ether (sometimes it will not take effect immediately, a little Check it out later)
The above method does not need to mine by yourself, and let others give it to you. I have personally tested it, and it is difficult to dig it if I dig it myself.
Development Architecture of MetaMaks
The icon referenced by MetaMask is Jazzicon