I’m using anspress questions and answers (http://expertsacademyeg.com/questions/)
and I want to change the font.
my knowledge of WordPress is poor, i’m not experienced.
so please tell me step by step how to change the font properties like font name, & size.
That’s general WP/HTML question. You can google for more information. Also there are many plugins available for changing fonts search for the plugin and install in in WordPress.