What theme did you purchase?
Do you have WP installed?
Do you have access to your cpanel?
Do you have access to your wordpress admin?
Sorry for so many questions but it would be good to make sure that you have access to all of these things.
Generally speaking though, you unzip the theme. Then you go to:
Appearance
Themes
Add New
-Renee’
general: http://codex.wordpress.org/Using_Themes
as commercial themes could be different, you might need to ask the developer/seller of your theme;
http://codex.wordpress.org/Forum_Welcome#Commercial_Products
I have a niche about automobile reviews and specifications named 500k – bike and car reviews. It tried CAR THEME by ftthemes costing me $30. But i see many problems with my wordpress. It does not allow crawling to google and i see error as “failed to load crawl data” in webmaster tools. Can it be a problem with theme. I did check there weren ‘t any DNS errors.