Hello ...

I'm an undegraduate student in economics and I'm beginning the study of perturbation methods. It's very hard for me to undesrtand how i can calculate the transition matrix in the Anderson and Moore Agorithm. For example how does they calculate it in a simple Money Demand Model?
Then if I want to solve a Dsge model with more than two state variable which of the perturbation methods is advisable?
I will be very gratefull to you for any kind of answer.
Thanks...!