I don't see iMessage in my settings?

I just got an iPhone 4 and texted my friend and she said to use iMessage cause its faster. I went to settings--->messages, and i don't see iMessage in there.

Go to this page
http://osxdaily.com/2011/10/18/set-up-imessage-on-iphone-ipad-ipod-touch-with-ios-5/
In the page they tell you anything about this
Hey please download poshmark
In the AppStore
And put this code HPUNW
Put it where it says invite cod
Please it's to earn points.

  • What settings will it change if I press reset all settings on my iPhone? Also, will this help speed up my iPhone because that's what I've heard. Because my iPhone has been so slow lately and taking like 3-5 minutes to send 1 text. If you know of any other ways that could help speed that up please also let me know that.
  • In my school there's a NO PASSWORD Wi-Fi but you can't connect. Some can, because he change something in settings in phone in Wi-Fi settings? Please tell me how! I need it very much, if somebody help me, i give him steam key. I need to know ho to do that on iPhone. He just add some port or something like that.
  • If you had a time machine and could see 1 person, who would you go see and why? I would see Aristotle, not only would I be able to bump shoulders with Alexander the Great I would love to pick at Aristotle's brain about philosophy, his views on life what he thinks the meaning is and how he sees the world in a few thousand years, maybe even slip an iPhone in his pocket and see if we have flying cars and floating houses when I come back to the present.
  • I see layers when I see? For a few months now I've started to see strange things. For example, when I drive I see a second layer on top of a yellow road line. Or when I'm typing something on my iPhone I see the original text plus the same text slightly beneath it (same as the road exmaple, a second layer). It doesn't happen on all objects I look at but it's definitely concerning. I've tried researching this on google and couldn t find anything. If someone could help that would be awesome.