Many libraries have free access to language learning software. For example, here in Portland, Oregon we have access to a free service called Mango Languages. Also, do you have a French-speaking pen-pal? There's a great website called penpalworld.com where I've made friendships that have lasted years. Try to immerse yourself in French to the best of your ability: Put your phone in French, your Facebook, your... Source: over 2 years ago

I just joined penpalworld.com to hopefully find new friends, maybe it could be something for you too? Source: about 3 years ago

eBay, you can also try bigwords.com which checks multiple buyback sites for the highest selling price. Source: 12 months ago

When I was in school, I used bigwords.com to buy any physical copy of a textbook I needed. It's a comparison shopper, and checks the difference between buying and renting at several stores. Source: over 1 year ago

Echoing that you'll probably get very little or no money from them, but my recommendation is to try bigwords.com. You can load all of your books into your cart, click 'sell' instead of buy, and they'll aggregate the best websites to buy them back (considering combined shipping, etc). Source: almost 2 years ago

Amazon has a lot of good used book listings, there's also bigwords.com to find used books (since you mentioned you don't like reading books on screens ...which is also awesome!). Source: about 2 years ago