After installing openrc and openrc-services, on rebooting one is booted to a command line with only a minimum of services enabled.

Some common services that could be enabled:

# rc-update add dbus default
# rc-update add sysklogd default
# rc-update add dcron default
# rc-update add alsasound default
# rc-update add consolekit default

Enabled services for current runlevel can be queried with:
$ rc-status

Enabled services across all runlevels can be queried with:
$ rc-update