I recently go back in to EVE Online and started doing some missions. Now I am no ace, more like a Jack when it comes to missions but there are a few tools I use for mission critical intelligence. EVE Survival is a must! It goes in to details such as who you are fighting, what damage type(s) they do and what ammunition to use against them. EVE Fitting Tool is another, that tool allows you to select a ship, put the fittings you can get, or you want to get and does all the hard work of trial by payroll. Both are free, one is downloadable and it does save you a lot of trial by error. Not saying it is bullet proof because at the end of the day it depends on your ability to adapt, and change tactics. It depends on your skills, not skillbooks.