Start with Head-to-Toe Assessment Nursing (42 min, RegisteredNurseRN), then Vital Signs Nursing: Respiratory Rate, Pulse, Blood Pressure, Temperature, Pain, Oxygen (13 min, RegisteredNurseRN). All 314 lessons here are free, from the teachers' own official uploads. You'll need manual blood pressure cuff, stethoscope, cna exam prep book (about $75 of kit). The book to keep beside you: Hartman's Nursing Assistant Care by Susan Alvare Hedman.