2 questions (movement speed + terrain.)

So, I'm a newbie, trying to make a game. So I have 2 questions:

I need a terrain, so I looked up how to make one, so I came here:

http://freeunity3dtutorial.blogspot.nl/2012/11/how-to-create-terrain-in-unity3d.html

Well, The first step is: - Click the Create button, it will pop up a new window unity3D applications Then select the "terrain> Create Terrain"

Worked but then this step: Will appear in the window scene plane field, and select the "terrain> Set resolution" and the value of its contents like the following, and then click the button "set resolution"

It didn't appear for me, so the platform/terrain was tooooooo big.

And I can't scale it.. Anyone can help with that?

--Question 2--

Also I want to change the movement speed of my standart asset - FPS controller.

I didn't change anything in the script, so it's original. I already looked up how to do it, but I didn't find something that works for me.

Notice I'm really a beginner.

Thanks in advance.