It seems almost impossible to progress next level. Why? I have done quite a great deal with basics and I cannot seem to progress next level. It is bit disappointed ;-(
If you click on "your profile" it will tell you how much xp do you need towards the next level.
Norwegian (Bokmål) - Level 3 Next level: 24 XP Total XP: 176 XP
Italian - Level 1 Next level: 14 XP Total XP: 46 XP
French - Level 1 Next level: 20 XP Total XP: 40 XP