Metamask will be set to the Ethereum Mainnet by default, you can switch to Goerli using the network selector. You may have to click "Show/hide". Don't worry, our dApp will ensure you are on Goerli if you leave it on Mainnet.
Test ETH for Gas
Goerli uses test ETH, which you can get from a faucet. Register at https://goerlifaucet.com/ and put your Metamask wallet address in the textbox to get test ETH to pay for your transactions
Stable coin to invest
If you want to invest some play money with your friends in your newly created testnet startup, you can grab some testnet JUBISDC (USDC substitute) https://testnet.jubidao.io/faucet