Essentials of oxidation number/oxidation state followed by a close look at the rules and how to use them. Video finishes with systematic naming.
You may want to also watch my quick revision video on half-equations https://www.youtube.com/watch?v=DU1S_oHSWGc&list=PLi6oabjl6cox3kXHf3Uif9zAQI6Eesw5t&index=28&t=112s
