Where Duolingo fits
Use it as a convenient way to keep practising between longer study sessions.
Check before you choose
Check the available course for your starting language and supplement exercises with real conversation.
Find the right edition
Start with the destination for your device or the publisher's website. Use the current requirements and terms there to confirm the edition you need.
Compare the workflow
Courses, flashcards, school workspaces and library borrowing serve different needs. Canvas access depends on your school, while Libby and hoopla depend on a participating library. Check that you can access the material before comparing study features.