The imperfect tense in French is easy to learn because the endings are straight forward. This video by Vincent explains the complexity of its use well in French and then you need to remember you need to master the difference in usage between the imparfait and the passé composé. Initially it can be a bit confusing for learners but constant practice and paying attention to usage is the way to do it.
Great explanation in French of how to differentiate between the imparfait and the passé composé. Nice it used Amélie to illustrate the point because it is such a well done and much loved film.