These are instructions for installing and booting an Apache LDAP server.
Install ApacheDS and ApacheDirectoryStudio by following the instructions at https://directory.apache.org/.
Boot ApacheDS. On Linux, the command would be something like the following:
sudo /etc/init.d/apacheds-2.0.0.AM26-default start
Use ApacheDirectoryStudio to generate a sample database of users by following the instructions at https://directory.apache.org/apacheds/basic-ug/1.5-sample-configuration.html.
In order to test your installation (see the next section), use ApacheDirectoryStudio to change the password of user Cornelius Buckley to secret.