Too many lines on the page and too many characters in the lines

Too many lines on the page and too many characters in the lines

I have converted a word document to Tex using Word2Tex. With the tex
document in 12 point, the corresponding pdf document has 38 lines on each
page, and about 77 characters per line. However, I would prefer it if
there were fewer lines on each page and fewer characters in each line. How
can I achieve this?