6th Scholarship, I don't really like it but if you wanna rush shipyards in the Charlemagne start then pick scholarship. 5th for me is Carousing, obviously to become friends with your vassals. If you are not playing a defensive pagan then 4th best is Family focus with good bonuses for fertility, health and global opinion bonus. Fourth best for defensive pagans is Theology, because as you already know defensive pagans can summon 2000 event troops for 200 piety and theology focus gives us much piety and +1 health on top of it is very good. Business is a very good focus with little risk of being depressed. Minting coins, trade route, building garden or tower reward us with either money or prestige or both. Business is a focus that gives us things that every chieftain dreams about, money and prestige. However, I think that business focus is 2nd best after War. Improving martial equals more warriors! Hunting is good as always, martial bonus, dogs etc. We can get two leadership traits and get to 4 star martial education real quick. If we have 1-3 star martial education then War focus is the way to go. Learning doesn't give us anything cool and intrigue is good secondary trait, a chieftain with high intrigue and low other stats is bad. We don't really need stewardship as tribal government gives us domain size bonus and our income is so low that even 50 stewardship won't help it. If you have a low martial and diplo score then right click on your portrait and suicide. If we lack high martial score we better have good diplo to keep our vassals happy. High martial means more levy and more levy means more room for expansion and being save from hostile invasions. I favor only one stat worthy of a strong chieftain. I won't mention the events that give us some prestige because there is a lot of them and it is not really a post with a long list of events. I recommend to put 2-3 points there after our legalism is level 1. Now you have a reason to start a new game and get that Augustus trait with your tribe :) As for the techs, there is only one, majesty. Last two are quite hard to get, but oh well. Traits that boost our prestige: Scarred, Proud, Renowned Physician, Viking variations, Born in Purple and Augustus. Therefore, traits, techs and events that boost up our prestige are welcomed. You build buildings and summon armies with it.

Tl dr, have high martial, pick war focus, build war camps, don't overextend, have large capital duchy, smash your enemies.ДЄs a tribe chieftain prestige means more than money.

If you want a nice guide for new players let me know in comments. I am afraid this guide won't be newbie friendly.

Ck2 how to get retinues