You could setup a forum and manage it but then you have to worry about maintaining it. This means keeping up to date on plugins (if you install any) and making sure you don't have any sort of vulnerable hole. This can even happen from uploading a theme so you will need to be cautious of what you upload and use.
Another alternative is what was suggested above. There are sites where you can register your clan and then use there hosting and setup to manage your own clan. I would recommend that to you since you are a beginner and that would be the best for you.
Another alternative is what was suggested above. There are sites where you can register your clan and then use there hosting and setup to manage your own clan. I would recommend that to you since you are a beginner and that would be the best for you.