The Firm comes with an inbuilt contact form, To use the Contact Page, go to WP Admin -> Pages -> Add New . In the right part of the screen you will see Template select box. Select Contact there. (any text written in this page will be displayed in the bottom left part of the contact page – you can use it for some small info like address or phone nubmers).
Now go to WP Admin -> Appearance -> The Firm Theme Options and configure your email and other details there. If you would like to display Google Map on concact page, you should enter the embed code in the Contact Page Map text area. Make sure that the dimensions of the map are 920x300px – How to find the google map embed code