This game is quite arcane, how'd you figure out all the ins and outs?
The basics are that you directly are the seven people on the circle. You give orders, and decide what to do in certain situations - which is always random with its outcome, but many things influence the chances of success - and thusly indirectly lead the tribe (indirectly, due to the tribe being able to decline or fail, for various reasons)
Your Tribe is divided into farmers and others, amongst which are crafters, hunters, nobles, weaponthanes and children.
Children are absolutely worthless, but you do want to have some (for the future)
Nobles are the named characters, that have portraits, and basically your available "pool" of clan leader candidates. There are no controllable ways of getting them. Nobles lead missions, even if they are not a part of the circle. Nobles can often bring trouble in events, and sometimes even lead to schisms.
Nobles are the only people who have an actual god that they have chosen to worship. The pleb doesn't matter when it comes to worship. (just the numbers).
Hunters act as skirmishers during combat, as lookouts for patrolling purposes, and produce 2 food pieces per year (they consume 1 themselves). You can either focus on hunters (and thusly skirmish tactics in combat) or completely disband them. Depending on what you think is right.
Crafters cannot fight. They craft goods from available materials. They give you a meager "Goods" income, which you only can build up on, by focusing on trade.
Weaponthanes are your dedicated fighters, who patrol, guard and lead in combat.
Farmers do everything else. They tend the crops, cows, cut down forests, fight as soldiers (only males) are the manpower behind worship and everything that isn't mentioned above.
Farmers are divided into two "classes" but it's a very minor detail about the game, that hardly ever comes up.
Your resources are
Animals : Cows being the most important one (the main resource, that can be used for almost everything)
Horses being a great trade good, and required for weaponthanes and nobles
Pigs / Sheep for some minor roles.
Goods (basically gold and trinkets. Can be sacrificed or traded. Used for temple upkeep)
People (Adult male farmers specifically)
Food (To keep those people alive)
and
Magic (that can help you in
every aspect of the game, although it's never a certain success)
The main objective is to perform a bunch of very difficult, costly and lengthy magical rituals, and through war and diplomacy, form a tribe out of a few neighboring clans.
The rituals are connected with the gods. Worshiping which can give you some benefits, like improved crop yield, healthier cows, your arrows being thunderous and other. Gods like sacrifices of magic, goods or cows (sometimes thralls). Sacrifices can give you the blessings for some time, while building a shrine can give you them for as long as the shrine exists.
Shrines cost an upkeep of goods, sheep and also a number of free worshippers. Thusly the permanent blessings are limited to what you can spare.
Each god is responsible for some part of the life in the Tula, and their having a worshiper of god X on the ring pleases him, increasing the chances of blessings.
The magical rituals (quests) require powerful worshipers to travel through the planes, and re-enact godly deeds of old tales (that you first have to discover) with help of the entire clan. It is always an extraordinary event, whether it succeeds, or kills half of your clan.
Finally there are your neighbors, Clans just as yours, with the same goals of greatness. There are many ways of interaction.
As the last mechanic, There's exploration. A tiny bit of adventure added on top, and a way to kick-start some (mostly-positive and lucrative) random events. It is dangerous to traverse the Dragons Pass, but so is everything else.
I hope it explains stuff!