I've been trying to find readily consumable information regarding the methodology that would be used to (for example) determine the ideal transfer between the Mun and Minmus (starting at the Mun). Any methodology that requires trial and error with nodes (or using a preconceived intuition) is the opposite of what I am looking for. I'm alright with taking a math intensive route or an inspection based route but I'm inclined to learn the math as well.
#Determining Transfers (Legitimately) from Varying Starting Locations
manic fjord
vagrant lion
Use this tool for calculating your transfers automatically: https://alexmoon.github.io/ksp/