How many levels should I complete?
I have mastered the first big chunk of spanish lessons (until 'clothing'). This means that I can progress to the next lesson. But on the progress bar I can see different levels, and by staying on the same lessons and just practicing the 'weekest words' I still get more and more skill points and I reach higher levels (now at level 8), My question: when should I stop collecting those points and choose a brand new lesson? I hope I was pretty clear.