The purpose of forums is so that many people can benefit from the exchange of information. Responses need to be public. If you are running Windows download a moodle package for windows and experiment with it. Web applications are inherently complex to set up, usually requiring a database and a scripting language in the case of Moodle php and (usually) mysql. One of those packages will give you something to experiment with that is NOT even a little bit secure, but it will give you a start.
Alternativly if it is important to you consider a consultant or Moodle partner.