Akhlah: The Jewish Children’s Learning Network is probably the best site for learning the aleph-bet. The “Script” column is the cursive Hebrew Alphabet. The “Block” letters are the most commonly used form in print. http://www.akhlah.com/aleph_bet/aleph-bet.php. Click on “How to write block letters” at the bottom of the page.
“Judaism 101″ is a Jewish site that provide lots of information. Make sure you read the article about the alphabet at http://www.jewfaq.org/alephbet.htm and the article on “The Name of G-d” at http://www.jewfaq.org/name.htm. There are several other articles you should read, such as “Torah” and “Hebrew Root Words.”
Audio Lessons for dozens of languages (including Hebrew) are available at FSI Language Courses.
The Wikipedia article is pretty good.
Omniglot has lots of links!
History of the Hebrew Language by David Steinberg.
Note: Some of the sites show the modern cursive Hebrew alphabet. It is probably worth learning, especially if you want to have an Israeli pen pal. However, it is not the same as the hand-written Hebrew I use.