To help early testers out a little, (espeically Dino), here is a brief little intro on people, work, and food.
Work is a very valueable ressource, as it defines how much you can do each day. Since you need food daily and getting food requires work, its requires quite some management. When you gather enough ressources to start building a structure, you need to assign work to it to, until it is finished. Depending on how much work you have left after gathering enough food, building a structure can take several days, and you can even un-assign work from a building again if it isnt finsihed yet.
You have (usually, see below)
6 units of work time availble and need
2 units of food each day. Further wee people have the same stats as you, but they only dedicate 2 units of work time to your city, because they are slackers, but in return see to getting half their food themselves. (So each additional citizen is a net gain of 1 work time.)
As those who have tried it will have noticed, your available work for the next days will depend on what you ate (even though you cannot directly choose that yet but just take it from the storage following the code for what other poeple would eat. What you eat only affects your 6 work time though, not that of your fellow wee ones. They will just be more or less happy depending on the, quantity, quality and even diversity of food. (and will in later versions leave the town if they dont like it enough).
Food comes in three different forms,
Leafs,
Shrooms, and
Berries. (aside from the kruft of course, that is ubiquous, but not very nourishing. And regardless of what your opinion on that matter may be, your fellow citizens dont think it's very tasty.). Currently plants have an unlimited supply of food. Later in the game they will only grow it slowly though, so you have to gain access to and even plant enough plants to grow enough food to keep your people happy.
Here's a descriptions of the different type of foods, from what will go into the ingame help:
Leafs. This juicy looking moss foliage provides your main ressource of food in here as it seems. It is munched away on rather decently for herbivores, and probably about like salad for everybody else. If anything, it gets dull and boring after a while.
Shrooms. Short of microscopic to everyone else but huge to you, as about everything else here. They are sprouting in moist spots down here like, well, shrooms, and not really very appetizing. But they are food none the less, and some shrooms in between are likely even better than nothing but leafs all the time.
Berries. There's nothing unusual about this ressource, just that they are really really tiny. To everyone else. To you the single berry is about the size of a melon.
They are rather rare and grow slow, but eating such a fine food gives you more power for the next day, and when your fellow citizens get to eat berries it makes them more happy.
edit: found a glitch where clicking sent you back to the main all the time. Fixed in version 042.