I want to use my own certificate is there anything out there that gives me a step by step? Is there any books I can download and use? Moodle for Dummys etc...
What do you mean your own certificate? As in your own design? If so this can be achieved with the current certificate module, but requires editing of the mod/certificate/type/<typeyouareusing>/certificate.php file.
I can explain more once I know what you are trying to achieve.