There’s a group called the Appliance Alliance who are putting together podcasts and YouTube videos dedicated to the appliance repair industry. From their about page:
Welcome to the Appliance Alliance Podcast, where our goal is to add value to you. Whether you are a new tech or a seasoned veteran we hope to have an episode or two for you. Zach and TK host the show and both have a passion for appliance repair and helping other techs grow in the field. Buckle up and enjoy the ride!