General help

Are you very sure? I mean very, very sure? 

You can go to Site Admin > Security > Site Policies and select "Open  to Google." that will open your site to Google searches. Entry to courses or even pages past the Front Page, is still dependent upon those courses and pages allowing Guest entry. 

Hi Rolf,
if you mean SEF for your users i.e. readable URLs, here are some pointers:

• Almost out-of-the-box: https://github.com/scara/moodle-local_sef/blob/master/htaccess
• Plug-ins (3.1+, MDL-28030):
  • https://github.com/brendanheywood/moodle-local_cleanurls

HTH,
Matteo