Help me with some things plz

[KwikRhyMes]

Ok So I Still don't understand how to make towers. Here is a list of things it'd be cool if someone could tell me how to make these in hammer editor.
Towers.
Stairs.
A Room that leads to another room(Yes i'm a noob o.o)
How to cut pieces of a room off so there can be a sky image like in cs assault
How to cut pieces of a room away so i can put a hidden passage.(Such as putting the texture there but you can go through the texture)
How to make a bridge like in cs assault.
What a map triggers and how do I make/use them?
Sewers.
Vents
Underground passages like in assault_nod or assault_r(It might be the same as sewers idk.)
Doors.
Textures that change on the same floor like this |grass|pavement|grass|
Windows.
Ladders.
How to put cars or vehicles that move in my map.
I probably will have more to ask later but that is all for now. I know it is a lot and I've seen tutorials but they just skip through everything and I'm all like Huh? So please tell me how to make these. And please don't link to a tutorial unless it is really really easy. Other than that I would like to read what you think is easiest. Please help me

 

[oik]

I think you should learn some of the basics of the hammer editior first,then come back to us and tell us what you still cant do.
There are vary good tutorials at http://www.interlopers.net/ I think you should start of with this tutorial >>http://forum.interlopers.net/viewtopic.php?t=1783 then move on to tutorials that show how to connect rooms,add doorways ect,and there are realy easy tutorials^^...but if ya cant understand them,please post what you cant understand.

Good luck!

 

[KwikRhyMes]

On the first link where do I go for CS not CSS tutorials? Other than that I THINK i might know how to make towers.

 

[KwikRhyMes]

When i reload a map it is all white and i cant retexture will it be on when i go into my map?