The first few minutes you share with your listeners are the most important time you have, but so many podcasters treat it as the least important. They dawdle, they thank their friends, they play promos (of other shows), they talk about things that new listeners won't know or care about. Always give your listeners what they came for within the first 5 minutes. Remember that on every show, someone's going to be listening who's never heard you before. Make them care.