To start, you need to have BNB in your Metamask Wallet. ( Setting up Metamask for BSC).
Go to the home page and choose an LP pool.
Click the "Get LP" Button.
Go to Pancake page, then deposit BNB and BTC, click "Supply". (You could click "Swap" to buy some tokens if you don't have them.)
Go back to HyFi page, click "Deposit"
After deposit, you have started to earn the LP tokens and receive fLP tokens that can be staked to mining HYFI. Click "Stake"
Click and stake your fLP tokens
Start earning HYFI
Finally, an LP token can not only gain the increase of the currency but also obtain HYFI mining rewards.