Just a few links that I love!
http://www2.scholastic.com/browse/index.jsp
-I have used everything on here! The printables and mini-book subscriptions are worth it! I promise!
http://www.readinga-z.com/
-I LOVE this website. It is expensive :( but I am planning on splitting a membership with my team. The raz kids section is perfect for kindergarten and first grade because it is all leveled and lets kids guide their own reading!