The short answer is yes, you can start a forum and certainly more than one. Forums provide a platform for discussion and the exchange of information and knowledge. Was there a particular thing that you were stuck on?
Forums are best discussion board for exchange your knowledge and experience. It is a best place where users can discuss their problems with experts of particular field and share their experience to solve the problems of particular field users and post their links.
You can start more then one Forum. You should hire a developer team for install your forum software and handle the users discussions.