This area is for the people who have stepped into the field and currently earning money from various opportunities.So adding funds to your account means you are linking your credit/debit card or your bank account,so that you can purchase anything from the internet using your paypal account.
So This step is not necessary for free users who are going to make money without any investment.Just skip this step and go on with registration,the advantage of adding funds will be you can withdraw your online money instantly to your credit/debit or bank account(which i have describe bellow).
Note:this step is not required if you are a free user
