Good Samaritan Law
Any persons who assist those who're injured, ill or in peril are protected by the Good Samaritan Law. As long as you’re acting voluntary, without expectation of reimbursement or compensation while performing such aid, on site—you’ll have legal protection.
Remember, when performing the skills you're about to learn, every second counts. So, unless required otherwise, don’t hesitate to call 911 or perform CPR and/or apply First-Aid.