[SOLVED] where to change the size of the font, and the color on the titles

I am using 3.4.5
new to this theme so please bear with me.

i can't find where to change the size of the font, and the color on the titles of
each page.
also the size of the font in the widgets (side bars) is way too big.
where do i change that also.

and where can i change the font and size for the whole content of the blog text/articles.

this is the site in question
http://www.bestbirthcontrol.org

Thanks