1.) First, go to https://goo.gl/WW81Fh
2.) Click the “Get Started” button.
3.) Login with your Google Account (your Gmail account).
4.) Click the “Add Podcast” button.
5.) Review and accept Google’s terms of service.
6.) Enter your podcast-only RSS feed.
7.) Check your email and verify that you own the podcast feed.
8.) Click the “Publish Podcast” button
9.) Once you have done all of this you just need to wait for Google to email you with approval. It normally takes around 1-3 days depending on the time of week that you submit your show.
—> Also, something to take note of is that the Podcast Portal for Google Play will be located here (This is where you can keep track of your shows and see their stats).