To install AWPCP from the WordPress.org repository, start by visiting your Plugins section of your WP admin panel:
Enter “AWPCP” into the search box, click on “Search Plugins”. This will bring up the Another WordPress Classifieds Plugin install screen.
Click on “Install Now”. WP will prompt you with “Are you sure?” Click OK. After the download is complete, click on “Activate Plugin”.
AWPCP is now installed and ready to configure.