Thank you

Sorry for the late answer... take a look at this list: http://www.fluentu.com/german/blog/great-german-childrens-books-for-beginners/ I would have named two books and both are in this list. It doesn't matter which they are. All of the books on the list are good ones. Read the summaries and decide which one sounds good to you! :)

Thank you Moritz Noricus. Can you please suggest something easy like children story books or something (some specific book's name).

Fairytales tend to be problematic. Our classics are traditional fairy tales collected in the 19th century. So originally they were written down in the language of these days. It really depends on the edition whether you can tackle them, or whether it makes sense to. I found this collection which is not too intimidating at 88 pages, and it says it's "Für Ausländer bearbeitet und mit Anmerkungen versehen": http://www.amazon.de/Deutsche-M%C3%A4rchen-Sagen-Ausl%C3%A4nder-bearbeitet/dp/3190010226/ref=sr_1_7?s=books&ie=UTF8&qid=1331905290&sr=1-7#_