If you want to learn it right no. If you just want to make a quick visit to Germany, yes. German, despite popular belief, is relatively easy for English speakers to learn because of its similar structure to English both grammatical and word wise. Advanced grammar and forming sentences on your own is a bit difficult because internet and most books do NOT give you the literal translation. Which is what you need to place the words in your mind properly and spit them back out in another language.
For now, dip your foot into it. I would not trust the internet very much but would invest in a good book (or library book) and see if you like it. If you do, see if there are classes at your school or a local German club who can set you up with a tutor. Remember the pronouncing a word correctly is 90% of a battle so you must have someone correct you. Some good online sources for begining are:
http://www.dw-world.de/dw/0,2142,9672,00.html (audio by native speakers)
http://www.dw-world.de/dw/0,,2547,00.html
You can get use to sounds by listen to German radio and Television. If you like it continue on. I would expect in 1.5 months you will be able to ask simple things, know common objects, recognize common verbs and learn how to change common verbs according to ich/du/sie/Sie/er/es/ihr/etc. If your library does not have an updated German language section, then try not to learn from books dating prior to 2006. Some grammar rules have been changed which will effect how you say or write things.
If you turn out to really like German, get a tutor, preferably a native speaker or someone who has lived in Germany/majored in college in German. Some computer software is available but to be honest, most of the products teach poor grammar and phrase things awkwardly. Rosetta stone is often too expensive for the regular person BUT if you have a good library they may have it for you to use in a computer area. I will say that on Youtube there is a man who helps with the pronunciation of common German words who is pretty good.
good luck