From 11:00PM PDT on Friday, July 1 until 5:00AM PDT on Saturday, July 2, the Shmoop engineering elves will be making tweaks and improvements to the site. That means Shmoop will be unavailable for use during that time. Thanks for your patience!
Since Estragon comes up with all the profound, insightful statements (see his character analysis for more), we think he acts as a guide for Vladimir. Of course, he doesn’t intend to be a guide, he doesn’t realize he’s a guide, and he is in no way successful at helping Didi in any aspect of life.