Graded Reader

Graded reader are articles specially adapted for different grades of student, from elementary to advanced. On lower level, they have limited vocabulary and use simple grammar, gradually increasing.

There are many available, with and without audio, just google for "graded reader".

I found you few:

• Lit2Go HUGE collection (many hours of audio, sorted by level, theme, book collection)
• ESL Fast
• News in Levels and Jokes in Levels