Code.org

Fun and creative coding games and tutorials for grades K-12, and beyond. Create your own dance party or explore Minecraft while learning coding basics.
Khan Academy

Free, high-quality online lessons and courses in a variety of subjects including science, math, history, English, computer programming, test prep and more. An excellent resource for teens and adults.
Brainfuse HelpNow

Get free live help with math, reading, writing, and language arts with Brainfuse HelpNow! Use the SkillSurfer feature to view lessons for Elementary, Middle, and High School, and take practice tests on the SAT, ACT, GED, US Citizenship and more.