Ok, then from the top left, working down.
7069 (-16/turn) is how much gold I have in my empire treasury, and how it is changing each turn.
Research: Robtics (7) shows the tech I'm researching, and how long it will take it to get it. Click on this to change the tech you're researching.
1832 is the year.
Beaker 100 pecent means all my commerce in my empire is going to research. Click on plus or minus next to it to change it to increase or reduce science as opposed to going to gold (though here there's no way to increase 100 percent). The 101 to the right shows how many beakers this city is producing. Wave your cursor over it for a breakdown.
Musical note 0 percent means no commerce is going to culture. Click on plus to increase it (at the expense of gold first, if anything is going to that, and then science). The 935 to the right shows how much is bing produced by this city. Wave your cursor over it for a breakdown.
Zero percent gold means none of my commerce is going to gold. The 852 next to it shows how much gold is being produced by the city. Wave your cursor over it for a breakdown.
Madrid is the city name. Click on it to change it. The arrows to the left are to go to other cities. Click on them to go to the next or previous cities (in order of founding, I think).
Below that it shows my food and hammer production. I am growing 64 food and eating 62, for a surplus of 2, so my city will grow by one in 62 turns. I have 82 hammers (wave your cursor over it for a breakdown), and they will finish my current project - Laboratory - in 4 turns. Wave your cursor over it for a hammer breakdown.
To the right of those is info on health and happiness (you can't see the happiness because of the window for enter screen shot name). The health information shows that I have 37 health points, and only 34 unhealthiness points, so my city is healthy. Wave your cursor over it for a breakdown. The happiness, which should be below it, works the same way.
The boxes to the right are for the various religions. They show that I have six religions (all but Islam) in the city. The stars on some of them show that they were founded in that city. The boxes on 5 of them show that I have the shrine for that religion in the city.
Below the religions is the display for various resources. First colum is strategic resources I have reaching this city, then health resources, then happiness resources.
Back to the left we have the trade routes for this city. I don't think there's any way to manipulate these except through other means (diplomacy, changing civics, etc.).
Below that we have the buildings that currently exist in the city. Wave your cursor over them for more information on each one.
Below that we have the population breakdown for the city (100 percent Spanish), and below that the culture status (Legendary, growing at 935 per turn).
The big screen in the middle is the terrain squares. Click on one to put on or take off a population point working the square.
To the right are the specialists - engineers (I have three showing), merchants (I have seven showing - there might be more than that but it only shows seven), scientists (I have none), artists (none), priests (I have 2) and citizens (lousy alternative when you can't have any of the others - I have none). Click on the plus or minus in each row to increase or decrease the number of that specialist. Wave the cursor over a certain type of specialist to see what each is giving to your city.
Below those specialists are great persons. It will only show seven, so there may be more. Wave your cursor over them to see what each is giving to your city. Regular specialists that come through some special means (such as the two from the great library) also show on this line.
Below them are the great person points being generated (mine is generating 141), and a bar to show you when you'll get your next great person. Wave your cursor over the bar for a breakdown on how the points are being generated, and the percentage chances for various types of great persons.
Back to the left we have what is currently being produced. If there are other things in the queue they will also be shown here. Click on them to remove them from the queue.
To the right of that we have choices on what to build. Wave your cursor over them for more information. Click on them to put them on the front of the queue.
I don't know what the three little symbols to the right of them (the helmet, the castle and the star) are. I've never used them. I suppose they would take you to certain types of possible builds.
The multi-celled box to the right of this is very complex. The top section allows you to draft a unit by clicking in it (if you have the Nationhood civic active). Below that the left part lets you rush through slave whipping by clicking on it if you have the Slavery civic active. If you're not able to do it right then, waving the cursor over it will tell you why not (e.g. how many population you need). To the right of the slavery button is the purchase button, to pay gold to rush the improvement (if you have the universal sufferage civic activated). I don't know what the next two buttons below those, with the computer screens, are - I've never used them. The next row of three buttons tell the city to emphasize food, hammers, or commerce, in that order. I don't know what the first two of the next row of three do, but the third tells the city not to grow population (even if food would put it over), unless you click it again.
The screen to the right of that shows your city's position in the world.
I'll edit this if somebody fills in the info on the things I didn't know - I don't think any of them are important, as I've never needed to use them, so there must be other ways to accomplish the same things.
