This section contains some very helpful resources for learning and using Biblical (Koine) Greek. I encourage you to check out the sites listed below as well as the subpages.
http://www.quisition.com/ - Here is a great site to help with vocabulary.
http://quiz.emergence.dk/ - This site focuses on quizzing your Greek (or Hebrew) recognition of morphological changes. If you want to practice parsing, this is the place to go!
http://www.dts.edu/demo/unicodekeyboards/ - This site has fonts and keyboards for Hebrew and Greek
http://scripts.sil.org/FontDownloadsGentium - This is a very good and free unicode Greek font
http://nerdlets.org/2008/10/25/typing-in-greek-linux-edition/ - This site explains how to type in Greek with Linux.
http://www.frame-poythress.org/poythress_articles/2007KeyboardGreekHebrew.htm - This is another guide for Linux.