Start with 5 Formulas Electricians Should Have Memorized! (17 min, Electrician U), then Episode 3 - How To Wire For and Install A Switch (28 min, Electrician U). All 520 lessons here are free, from the teachers' own official uploads. You'll need klein electrician tool set, non-contact voltage tester, digital multimeter and a few more basics (about $295 of kit). The book to keep beside you: Wiring Simplified by H. P. Richter.