Go to WordPress.org and download the latest version of WordPress. It is worth noting that WordPress.org and WordPress.com are not the same things. Since we are using Windows we want a zipped archive rather than .tar.gz. Right-click on the WordPress download and choose to Extract all and uncompress the folder to htdocs. After it is uncompressed rename the wordpress folder it created to public_html if this is your primary site or if and add-on it would be example.com.