I do rotational exclusively, and never kept notes. The story album and memory system are quite adequate for remembering what happend to who when, as Cinebar pointed out. My standard approach is to pick a given family (usually one I've made) as the central characters and go until I hit a logical stopping point. Then it's on to family/sim 2, often whoever was on welcome detail. The style is play B as a 'while that was happening to A, this is happening to B' and so on until I get back to A and start the cycle over again. What I usually wind up with is a set of 3-4 families that know one another and have inter-connected stories. It is quite easy to have another set in the same town doing the same thing, but have little to no connection with the first set. The possibilities are limited only by your imagination and time available for simming.