WordReference.com is the BEST free French/English online dictionary out there. It puts Google Translate to shame. There's also a wordreference app for your phone that is amazing.
This professor at the City College of San Francisco created a website that shows you how to type French accent marks using your computer. If you click on "quizzes," there are also online grammar quizzes that you can take for fun.
Thanks to Becca Britton in 3rd hour for showing us this great site/app. You can play games on your computer or on your phone, progress up the levels, and earn points. It also lets you hear spoken French as well as practice your French pronunciation.