Start with Legal & Ethical Nursing Essentials: HIPAA, Torts, & NCLEX Tips (60 min, SimpleNursing), then Ultimate Medical Coding AAPC CPC Certification Guide (14 min, Coding Clarified). All 4 lessons here are free, from the teachers' own official uploads. You'll need cpt code book, icd-10-cm code book, laptop stand and a few more basics (about $310 of kit). The book to keep beside you: Medical Billing & Coding For Dummies by Karen Smiley.
What you'll need
CPT code book: The book coders use daily.
ICD-10-CM code book: Diagnosis codes.
Laptop stand: Screen at eye level for long study sessions.
Noise-cancelling headphones: Focus through long video lessons.