Good Arabic and/or Spanish Textbooks?

Check out the "Al-kitaab Fii Ta'allum Al-Arabiyya" series of books by Kristen Brustad, Abbas Al-Tonsi, & Mahmoud Al-Batal. I used their first book to learn to read and write Arabic, and I have their first textbook after that but I have not used it yet. The only thing about it is, it dives right into the Arabic with little explanation, but that might be okay for you, especially if you have a teacher to go to. You can find them on Amazon.com. There are at least 3 volumes, so make sure you get the first one! I also have Elementary Arabic: A Grammar by Frederic Thornton. It's dry and grammatical, but I like to have that kind of thing for a reference when I learn a language. Good luck!