It's not overally complicate kind sir.
Aim for Stam/Str pieces all the way until 80. Usually you just priorize highest Stam items even up to 90 disregarding green stats (STR and STAM are a function of the item ilvl, same slot items of equal ilvl will always have same STR/STA).
At low levels, well, just hit all the things. Avenger Shield hits for a metric crapton of damage at pre 85, just a single AS hit will be enough to hold a mob till it dies.
If there's a larger than 3 mobs pack and you don't have Hammer of the Righteous yet (I can't really remind at which level you get it), throw judge and crusader strike on mobs not hit by your AS.
After that well, as long as you are hitting CS/HotR, AS and Judgement on CD, you are doing it right.
Once you get to 85+ and have your full tool at disposal, you can start worrying about actual rotations
