There is a plethora of material and apps to help you be successful inside and outside of class. Remember, a language requires constant practice and contact to be retained, so finding and utilizing these (just some examples) will help your journey to German Awesomeness.
Socrative - We will use this in class a lot for activities. Very fun!
Dict.cc - GREAT German/English dictionary. Don't use Google translate.
Tivisel - Get German TV streamed to your device.
tfsRadio Germany - Like Tivisel, but with the radio!
Google Classroom - Every class will have a Google Classroom, and the app makes it easy to participate!
Dropbox - App or just online account. This will help turn in projects.
Deutsche Welle - great resource for learning German from a German news site.
Deutsch für Euch - A German girl who explains a lot about grammar and vocabulary.
Slowgerman.com - exactly what it sounds like.
dw.com - Deutsche Welle's website, lots of ways to learn and interact with German