The Homeschool Buyer Co-op is a free homeschooling organization for both new and veteran homeschoolers. Co-op membership is free and confidential, and entitles homeschooling families to GroupBuy discounts on high-quality curriculum. On the site you'll find lots of free information, such as databases of free curriculum, field trips, and educational contests and scholarships. Highly recommended. Click here for more information and to sign up!
There are tons of freebies for the summer. Many of them expire August 31st.