basic questions from a newbie

[thesimbug 0]

hi, there, i have some basic questions.

first note:
i play non rh sc 4.

questions:
1. we all must ever experience the wave of demand for better jobs when we build elementary school, high school, n college in our city, right? a few times handling the wave of joblessness makes me hypothesize that the i need mayors interference by dezoning-then-rezoning or one-factory-by-one-factory-demolition by the tractor, while the r n c can upgrade their selves to higher wealth status (from $ to $$ n $$$) without mayors interference. your theory?
2. would you give me some lecture on which transportation facility (road, sub way, bus station, train, etc) is the best (most efficient/carrying most passangers, least noisy, least pollutive, etc) one? would you give me some infos on each of the transportation facilities? note: so far, i only play small sized cities.
3. still related to question no. 2: what is train for? intra city transportation or inter city transportation? would you give me some infos on it (its efficiency/capacity to carry passangers, its noise, its pollution, etc)? note: so far, i only play small sized cities.
4. still related to question no. 2: what is ... freight train (am i wrong?) ... for? note: so far, i only play small sized cities.
5. what is police station for? there are 4 police cars there n there is police station symbol side by side with the fire station symbol in the red emergency triangle icon, but when must i dispatch this?

really basic questions, right?
need some nice helpers there.
thanks a lot before, buddies!

[squiggles35 1]

the answer to question # 5 is: you need to dispatch them when there is a fire/riot in your cities.

Fires occur way more often than riots unless your city is really badly governed. Also, the police station isn't needed until yyour public safety administer says that it is time to build one. Plus, only build a fire station when your first fire breaks out.

[irule 1]

1.just dezone the whole lot if you have enough money.That's what I did

2. mass transit doesn't create pollution. I would say subway is the most efficient.

3. It is both.

4. freight trains raise demand for i if it is connected to another city

5. when there is a natural disaster created not by you and it isn't a fire, you use it.you'll know when. You probably wouldn't see it unless you try to get it, and it is hard. the disaster is like people throwing tomatoes or something else.(I forgot)

[BIWDC 2,296]

On question 2:
The most efficent transportation is subway as it's out of the way underground
it doesn't pollute.The above ground normal trains are about the same(i use
them the most)but still the subways are underground so they would be more
efficent .The trains(any)don't seem to pollute.On busses well there good but they
add to the pollution & your city road traffic,so there not very efficent.On traffic
in general(cars,ect)it's the primary way your sims get around but traffic gets out of 
hand as more sims move in + the pollution goes up so it's not very efficent but 
required to get a population just off set it with mass transit.

Don't forget about the mono rails & above ground subway trains aswell which are
more the same as normal trains they take up space above ground & are good to 
use but as space takers not very efficent.

As a mass trainsit Start off with normal trains & or busses then as you make your city
larger add subways or what ever you like.All mass transit is expensive so that to can
be a problem aswell.

Not much if anything to say about noise as it doesn't seem to be a factor.

[thesimbug 0]

thank you, everybody! your infos are very advantagous for me! ill practice them!

thanks again, buddies!