How do I link to a custom module? - Joomla! Forum - community, help and support

hello guys i'm working on 2 new modules dealers list , customer's testimonials, saved them modules folder, i'm not sure how got work in past i'm using link customer's testimonials (index.php?option=com_content&task=view&id=38&itemid=78&testim=display) when go page module looks working fine @ top of page displays:

you not authorised view resource.
you need login.

so question best way link custom module?

menu item.