Here’s a brief information about how to install your WordPress theme from scratch

Upload via WordPress Admin

Step 1 Go to yor Admin Panel > Appearence > Themes and click Add New:

add_theme

Then click on Upload Theme

upload_theme

Step 2 Here you have to select the ZIP file of your theme, for example coni-pro.zip

Step 3 After install click the Activate button:

activate

And that’s it, the theme is installed.

If you need help installing WordPress see the link below:
http://codex.wordpress.org/Installing_WordPress