You can look for "Graded Reader's". They are books that have been adapted for learners. They have between 4 to 6 levels, first level usually has 300 words, the second 600, and so on. You should be able to find them in most any big book store in Germany. I would not recommend you to read translated books or books for kids yet... maybe after 400 hours of Spanish. If you try to read them know, the experience might be frustrating.