There are two orange RSS icons at the bottom of the home page. They are convenient to use to get e-mail updates when the homepage or errata change.
The upper RSS is the subscription to the errata.
The lower RSS is the subscription to the home page.
There is no RSS that will notify you of all site content changes. For major updates, we will post an article on our home page.
To subscribe to RSS in Thunderbird: http://kb.mozillazine.org/Thunderbird_:_FAQs_:_RSS_Basics
To subscribe to RSS in Outook: https://support.office.com/en-us/article/RSS-Feeds-c32c8262-e212-42ad-b8b6-e51cbe82c42c?ui=en-US&rs=en-US&ad=US
To subscribe to RSS in Firefox: https://support.mozilla.org:443/t5/Basic-Browsing/Live-Bookmarks-Subscribe-to-a-web-page-for-news-and-updates/ta-p/478