Good morning,
Just curious - should I add all 4 Sitemaps to my public/html folder:  xml, ror, html, and text?  And then which do I submit to Yahoo - I read online that the text file should be submitted (is that accurate?)
Finally, do I also add a link on my website to the HTML Sitemap?
Sorry for all the questions - I'm obviously new and blonde 

Thank you in advance!!!