When do you move on?
I have been doing Duolingo for a while now, but I never seem to move onto new words. I am getting a bit bored of doing it, to be honest. I am not convinced about it. I don't seem to be progressing at all!
Why don't you click on the "Basics 2" skill set and give that a try?
Generally, when I start to get bored with a skill set, that's an indication that it's time to move on. If I get confused or frustrated, it's an indication that I need to go back and review some more.