the default settings in most word-processing programs are acceptable. "Indent the first line of every paragraph. Do not manually divide words at the end of a line" (p.
Do not use full justification, which adjusts the spacing between words to make all lines the same length (flush with the margins). "Align the text to the left and leave the right margin uneven ('ragged'). (2.54 cm) margins on all sides (top, bottom, left, and right) of the page." If your subject outline or lecturer has requested specific margins (for example, 3cm on the left side), use those.
Use the same font throughout the text of your paper, including the title and any headings.
Quick formatting notes taken from the Publication Manual of the American Psychological Association 7th edition