Sure, here's a step-by-step guide on how to submit your podcast to iTunes:

1. First, ensure your podcast meets Apple's minimum requirements: cover art must be in the JPEG or PNG format in the size of 1400 x 1400 pixels at minimum, and 3000 x 3000 pixels at maximum. Your podcast must have at least one episode, and both the podcast and its episodes must be properly tagged.

2. Open iTunes on your computer. If you don't have it, you can download it from the Apple website.

3. From the menu, select 'iTunes Store'.

4. On the right, you'll see a menu. Click on 'Podcasts'.

5. At the top right of the screen, you'll see a button that says 'Submit a Podcast'. Click on it.

6. You'll be redirected to Podcasts Connect (or Apple Podcasts Connect), Apple's podcast management area. You may need to log in with your Apple ID.

7. Click on the '+' button at the top left of the screen.

8. Paste your podcast's RSS feed into the text box.

9. Click on the 'Validate' button. If there are no issues, a 'Prepare for Submission' button will appear.

10. Click on 'Submit'. Apple will then review your podcast before it goes live, which can take up to a few days.

Remember, once your podcast is approved, any new episodes you upload to your RSS feed will automatically appear on iTunes.