How can i tell how much more points do i need to reach the next level ?!
now i am on 14 and cant tell when will i be in 15
You are part of an A/B test for the Coach function and the graph you are looking for has been removed from the home page.
When you finish a lesson you will get a graph showing you how many more XPs needed to finish the level, otherwise you have to calculate it manually using the data indicated in stefott's post.