There are some options on the upper tab.
You can view friend requests, inbox and notifications.
You will be notified when another user asks you to correct their exercises or if another user corrects an exercise, you have solved.
Notice, there are different levels, beginning from A1 up to upper intermediate B2.
Every level, divides into two divisions.
For instance, beginner level, splits into two sections, which are: beginner A1.1 and beginner A1.2
Each section consists of around 7 to 10 lessons.
At the end of each section there will a “level test”.