Learn first simple
Right, Celtic Death! The principle «learn first simple, then compound» holds not only for multiplication tables, but also for tactics. As long as you still miss simple pins, forks and skewers (I do) then you have to learn them again and again, in thousands of variations. This is exactly why I am convinced of CTS as an excellent training tool. And still my rating is creeping up at a speed of roughly one point a day.