It takes a lot of practice to do it properly. You can find basic instructions all over the Web (try [Google][1]). A recently-published (and inexpensive) book by R. Avraham Reit entitled [Teka Beshofar][2] has many useful tips and much helpful information. [1]: http://www.google.com/search?q=shofar+blowing+instructions&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a [2]: http://www.feldheim.com/cgi-bin/category.cgi?item=978-1-58330-309-2