really quick last question i wanna clear the guides i have and put some for new ones?

hey i just installed sketch up on my machine and its been a while since i stop using 3ds max "highschool" but please, please tell me there a way to have several views going at once ""top, left, rigth ya know"" also when i set for something to be an exact size in my case "4'x 2' "" bearded dragon enclosure"" its never an exact size any help would be awesome.
thanx the name is oscar ill be here often