I'm looking for something on a similar part to the Oxford University Press ESL books (Lets Go, English Time) but for Spanish, not English. Lots of pictorial content, and carefully graded for quick progression.

I lived in South America for two years and found the tapes the quickest and best way to pick up the language. I forget the name of the Author but it was the tapes endorsed but the US Government. You can also look at the Barron series to learn Spanish but I need the tapes to help me understand.