Here my students are trying out the quiz I created to train them to use Final Cut Pro editing software. Many of them watched a free video on Lynda.com, and were ready to take the quiz based on that information. Since I only have 5 computers in my classroom, I had to give the quiz in shifts.
One thing that I struggled with when creating the quiz, was that Edmodo froze up, and I had to log out, and restart to get it to come up again. However, this was only a minor inconvenience. For the most part, everything went very smoothly.
I think that my students who have had a chance to log on and join the page, and take the quiz, found the interface very familiar. I teach almost 200 students per week, so with 5 computers, I haven't had time to allow all of them to get started. I hope to move more of them towards Edmodo in the coming week.