the please see: InstallGettingStarted
point your browser to: http://127.0.0.1/tiki/tiki-admin.php?page=features
Please proceed to:
then proceed to:
add a new group
and include both registered and Anonymous. (this means you will have all their permissions plus yours)
point your browser to:
see permission documentation for more info.
Now the easy part is over, and you are now in a world of options to Configure Tikiwiki.
Use the Features Admin to enable Tiki features, then use the Admin page for each specific features.