quick start:
1. cp /etc/apache2/httpd-example.conf /etc/apache2/httpd.conf
2. svcadm enable apache2
3. svcs -l apache2
if state = maintenance than you need to go to step 4.
4. svcadm clear apache2
and it is up and ready with default settings. Everything beyond that is configuring httpd.conf.
regards
Mipko