Here’s an interesting article on fonts and information trustworthiness from the Scholary Kitchen, a blog established by the Society for Scholarly Publishing: http://scholarlykitchen.sspnet.org/2012/08/13/the-typography-of-authority-do-fonts-affect-how-people-accept-information/. You may want to download Baskerville and Latin Modern Mono (same as Computer Modern) from Font Squirrel, http://www.fontsquirrel.com/, or http://www.dafont.com.