Highlight the text you want to number and click on the Numbering button. To have different symbols and numbering styles select Bullets and Numbering from the Format menu. If you would like to change the margins of the text you have typed, point to a margin boundary on the horizontal ruler using the Page Layout view. When the pointer changes to a double-headed arrow, drag the margin boundary. You can also do this from the Print Preview icon, or the identically-named option on the File menu.
Indents are useful for paragraph layout.
You can change them by clicking on the triangle shapes on either end of the horizontal ruler bar. The left hand triangle pointing downwards is for the first line of a paragraph only. The left hand triangle pointing upwards is for other lines. Drag the triangle to where you want the indent to be. Click on the Ruler option on the View menu.