What fonts are being used in the Conversion Cats theme?
The main body and heading sans-serif font used throughout the site is Gotham. The body font weight is Gotham Book. Other font weight versions of Gotham used throughout the theme are Gotham Light, Gotham Medium and Gotham Bold (the italic versions of all of these weights is also used). To download Gotham, you will likely need to purchase a license (from somewhere such as Typography - try this link) - unless you can do some Googling and find a free font package somewhere ;)
For the fancy cursive font that we use throughout the theme, this is a free font called Selima. You can download that here.