Start with My Dream Power Hammer Restoration! Part 10 (32 min, Alec Steele), then My Dream Power Hammer Restoration! Part 11 (38 min, Alec Steele). All 992 lessons here are free, from the teachers' own official uploads. You'll need angle grinder, bench vise, metal file set (about $150 of kit). The book to keep beside you: The Complete Bladesmith by Jim Hrisoulas.