What is the best way to learn French for free on the internet?”
I would highly recommend podcasts! There are podcasts available to learn almost all the major languages (and some that aren’t major!). I used it this past summer to teach myself some Italian due to a trip I was taking. Podcasts are great! I don’t know your familiarity to Ipods, Itunes, and podcasts, so I will explain as if you aren’t familiar. A podcast is like an online radio show, kind of, and they can be about ANY topic (or some have NO topic and are pretty bad!). You can learn a language, go on a walking tour, learn about photography or photoshop, hear stories, listen to the news, and so much more. They are available on Itunes, Podcast Alley, or just search “