This site features a wide variety of texts for beginners and intermediate learners, loosely graded by HSK level. They are written by different authors and the style and difficulty varies greatly. On the lower levels, we're talking about picture books with simple Chinese, but some texts rated as HSK 2-3 are actually much harder. There probably used to be audio and pop-up definitions for the the texts, but since they rely on Flash, they don't work anymore. Still, this is still a good resource for beginners! You can always copy the text and annotate it elsewhere or use browser plug-ins to make it easier.