WordPress.org

You can use the built in installer and upgrader, or you can install the plugin manually.

1. You can either use the automatic plugin installer or your FTP program to upload it to your wp-content/plugins directory the top-level folder. Don't just upload all the php files and put them in /wp-content/plugins/.
2. Activate the plugin through the 'Plugins' menu in WordPress
3. Visit your Top Position Google Finance setting page in administrator area
4. That's it!