Sheepspot by Sasha Torres is a great podcast and an overall great spinning resource. If you are looking for a podcast that will help you become a better spinner then this is the first one I would recommend. She is very strict about sharing information and making it clear that each podcast is going to have a lesson to teach, but that there will be print resources available. Even if you do not listen to the podcasts, subscribe to her newsletter. You will certainly get more out of it if you do both, but even with just her newsletter you will gain access to all of the great resources she publishes. At a wild guess I would say that Sasha is a librarian or otherwise involved in higher education, she gives detailed resource information for all of her podcasts and makes sure that the information is concise, clear, and readily available. As of the writing of this review she is just working on six ways to get out of a spinning rut, her online course. It does run a bit expensive, but I imagine it will be handy. Since I have not taken it, nor will I have the means to do so in the immediate future, I cannot say it will be worth it or not.
Check out this great podcast/resource. It is well worth the time.