There are two ways to install Aheto - Automatic or Manual.
Automatic installation is the easiest way to install Aheto.
To do it, log in to your WordPress admin panel and go to Plugin->Add New and click on Upload Plugin.
Select the zip file and click Install Now.
After clicking that link, WordPress will automatically complete the installation process and ask you to activate the plugin. Click on Activate Plugin.
The manual installation involves uploading all the files to your web server through FTP software.
Unzip the archive, then upload the aheto folder to the wp-content/plugins directory.
Finally activate the plugin through your WordPress admin.