Before setting sail into the ocean of promotion, have a clear idea in your head of who your ideal listener is and target yourself to them.  If you try to appeal to everybody, you'll end up appealing to nobody. 

Adding a link to your podcast in your email signature is a dead simple way to share your podcast. It's unobtrusive, costs nothing, and really... it's a no brainer.

Connect with other podcasters and ask to appear on each other's shows. Being on their podcast is a great opportunity to address a fresh audience. Having them on your podcast will likely bring some of their listeners to you. Everybody wins.

If you mention someone in your podcast, tell them! Perhaps you mention a book you recently read. If so, tell the author and link them to the episode. You might be surprised how many of them share it with their audience.

Add some pizazz to your social media posts with a professional audiogram. Don't be intimidated as these are very easy to create using online tools such as Wavve. Pick a short, captivating snippet from an episode and away you go!

Reach out to content creators in your niche and set up a cross-promotion. Agree that you'll mention them on your platform and vice versa. 

If you are doing an in person interview, grab a quick photo with the guest for a super easy social media post. Conducting the interview remotely? A screenshot works just as well!

Not all of your audience will have heard all of your episodes. If a topic that you've discussed before comes up on an episode then a quick interjection with the episode number is an amazing way to encourage habitual listening.