Fatwa Online offers useful tools for learning to read
and write Arabic.  
You can also download the entire text
of the
Arabic Course for English-Speaking Students,
volumes 1-3 by V. Abdur Rahim.  These are the books
that are taught at Al-Madinah University.

Click here and then click the following in order:
1. "Other" 2. "Downloads" 3. "Arabic Language".
Learning the Arabic Language Weblinks