Submit your podcast to the iTunes Podcast directory
You need to get the rss link for your podcast. After logged in, go to the main page, and click on the share button of your desired podcast. Then, you will see your RSS feed from the pop up.
To submit the feed to iTunes, sign to iTunes Connect, and then click the My Podcast icon.
Click the + button to add a new Podcast.
Enter the RSS feed we get from step 1 into the text box and click the "Submit" button.
Your podcast is now submitted to the iTunes Store podcast directory. It will take Apple few days to review your podcast. The process can take up to 10 days, though most submissions are approved within 3 days
How to change description or publish date of an epsiode?
After logged in, go to the main page, and click on the edit button of your desired podcast. Then, the edit screen will show the details of the podcast, then scroll down, you will find the list of episodes as shown. Then click on the edit button of the desired episode.
On the episode edit screen, you can edit description and publish date for the episode. Note that changing the publish date will change the order of the episode.