Chinese

 Chinese has two difficult aspects: the way it's written and the way it is spoken. 

The grammar seems simple, at least so far. It is SVO.  There's a little negative particle before the uninflected verb. The verb doesn't inflect. Adjective precede nouns, as in English. I've done 4 lessons in 5 days. Probably today, the 5th day, I just need to review the fourth lesson. 

I was wrong that they are introducing more characters with each lesson. The number of new ones is actually less, but it seems like more because I have not thoroughly learned the characters from previous lessons. 

Going too fast risks burnout. Going too slow is not good either. You want to spend a lot of time, but not emphasize going too fast ahead.  Reviewing things that seem easy is good; it seems easy because you know it, and that is a good thing.  But you want to get to know the characters that are repeated a lot: is, and, not. Those have to be second nature.