This is the page where I explain how to join the class mailing list. On the right side of the address bar of your browser you should see the RSS logo (it looks like rss or rss icon, possibly in blue). You may click there or here. After that you have two options: (1) subscribe to the RSS via your method of choice or (2) just check the page periodically for updates (about once a week should be sufficient). For more information on what an RSS is, check out the Wikipedia article.