To start farming $CAKE rewards, you need two things, BSCDEFI token itself and Pancake Swap LP tokens.
Enter an amount on one of the tokens under “Input”. The other will calculate automatically.
Click the Enable BSCDEFI button. Your wallet will ask you to confirm the action.
The Supply button will light up. Click it.
A window will appear saying how much you will receive. Click the Confirm Supply button. Your wallet will ask you to confirm the action.
After a short wait, you will see your LP Token balance at the bottom of the page.
Go to the Farms page
Find your Farm using the search field. To open details, click anywhere on the row showing your pair. Click the Enable button and confirm your action in your wallet.
After a moment, the Enable button will change to Stake LP. Click it, and a new window will appear.
Type the amount of LP Tokens you would like to farm with into the field, or just click Max to use all of your LP Tokens, then click the Confirm button. Your wallet will ask you to confirm your action.