I am going to introduce some very useful Mandarin Posters I have ever seen. You can hang them on your wall just in front of you. You can check the most common 1000 characters any time and circle the ones you have learned. It is just in front of you. All the 1000 characters! Very directly!
Here are the pictures from one of my students.
The second one is the Chinese radicals. Very useful! Isn’t it?
You can check the website for the posters. http://store.