Text message when door opens.

Hello out there! This is my first post to this forums. I recently aquired an arduino uno from one of my professors at school. But the problem is I don't know anything about how they work. I am currently a sophmore computer science student, so I know the basics of programming. Iv done some searching on here and have not really found what I'm looking for. Could anyone point me to a tutorial on how to make the arduino send a text message/email when a door is opened?
thanks!
Quinten

A starting point.

https://www.google.com/search?num=100&lr=&as_qdr=all&q=email+site%3Ahttp%3A%2F%2Fforum.arduino.cc%2Findex&oq=email+site%3Ahttp%3A%2F%2Fforum.arduino.cc%2Findex&gs_l=serp.12...1165259.1167319.0.1171131.5.5.0.0.0.0.150.328.4j1.5.0....0...1c.1.32.serp..5.0.0.Lx8Vwd2Kl2s