Great source for non-fiction text for the younger grades. In order to incorporate more non-fiction per CCSS guidelines, we'll have to think out of the box and seek out "non-traditional" texts to share with students.
All too often, we forget about the concerns of urban students. This post is well written and thought provoking, and its assertion that standardized tests can have value may challenge your current thinking.
Mastery Connect is a network where teachers can share formative assessments that are tied to common core standards. You get all that for free. The premium version is definitely intriguing, because it allows you to track student mastery of standards in a very easy way. Oh and their common core app is pretty sweet, too.