Hello Monica,
You better start by taking some initial German course to get introduced to the basics: pronunciation, basic grammar and simple phrases.
Then you can start searching the net for sites such as the one suggested by Otto and others such as:
* german.about.com/library/anfang/blanfang01.ht
* www.babelnation.com/german//courses/index.htm
* www.europa-pages.com/lessons/german.html
* www.alphasoft.cc/store/learn-german.htm
Viel Glück beim Lernen :)