You may install your WordPress plugin through one of two ways.
Either directly on your WordPress blog, or by downloading it from within your profile.
Here is the link to the plugin page within your account.
You need to make sure you are connecting to the correct campaign.
To install from within your WordPress installation, go to the plugins page within your profile.
There, click on Add Plugin and search for Content Writer or SteadyContent.
Once you have found that plugin, click Install and follow the setup instructions.
IMPORTANT In order to connect to your SteadyContent account, you will enter your email address and password and click Connect to link your plugin with your SteadyContent account.