Q:

Mark in word and margin in paragraph

Anyone knows how to put a mark on a word?
(1) Text:
  (1) will be slightly raised as if an exponent.
Also, how could shorten margins in a paragraph? Clip 10 mm left and 10 mm right?

A:

If you want a mark in your text, you have several approaches.

Use \textsuperscript{(1)}, as mentioned by Werner
Use mathmode (not my favorite solution, but works as well).
I don't know if applies, but a mark could also be an emphasize... so you can use \emph{word}.

For the margins, I wasn't sure what do you want, so I also have two possible answers:

Use \usepackage{chnpage} and \begin{adjustwidth}{10mm}{10mm} ... text ... \end{adjustwidth}, as mentioned by jon in the comments
For global margins, go with the geometry package and define your margins, e.g. \usepackage[outer=10mm,inner=10mm,vmargin=10mm]{geometry}.    
You could also set the paragraph inside a minipage environment and set the width as you want.

