You can have just 2 accounts: one personal, and one bussiness. Be carefull at the bussiness account, cause you will have to play a lot of comissions.
Can I have multiple PayPal accounts? Yes. You can have one Personal account and one Premier or Business account. You can add more email addresses, debit or credit cards, and bank accounts to your account, but each account must have its own email address and financial information. You can also upgrade your Personal account to a Premier or Business account.