I'm not sure if it's a good Hungarian text, but the one I got the most out of was called "Learn Hungarian"[1]. It's out of print but you may be able to find a used copy on Amazon. To be fair, by the time I got my hands on a copy I already had a decent grasp on the grammar, an OK vocabular, and had been living in Budapest for a few months.

[1]http://www.amazon.com/Learn-Hungarian-Zolt%C3%A1n-B%C3%A1nhi...