Wanted to share this new discovery; Quizlet has flashcards on some Domain facts. Most are oriented to newcomers, but there are one or two decks that delved into the technical side. 'Review of Internet & Domain Names' deck seemed a bit bland, but covers the need-to-know. 'Top Level Domain Names' gets into the technical side of things. e.g. .mil, .edu, .com, .net ...etc For anyone interested in studying on the go(iPhones) they do have a mobile app, but not for Android. Android users could use Learn2Leitner which is integrated with the Quizlet service.