Listeners are changing, they have shorter attention spans, and they're getting content on mobile. Before you even start with social media, you need to have a strategy to promote your podcast. Think about where your listeners spend time, on and offline.
You need to figure out which sites would work best for you.
Don’t think you need to be everywhere at all the time. I would say pick one social media channel, like Instagram, Twitter, facebook or youtube.
Choose this channel on who your listeners are. Maybe they are millennial females looking to learn about wellness, spirituality, and entrepreneurship, then Instagram would be a great fit. On the other hand, if you have a political podcast, then maybe Twitter would