The Chaos Forums are a fantastic resource with a ton of information. They can be accessed by creating an account at https://forums.chaosgroup.com. By default users that do not own commercial licenses cannot post new topics or responses to existing threads. They can only view existing topics and subscribe to them.
Users that own commercial licenses should request special access rights by contacting our customer service. They provide them with the ability to open new topics or respond to existing ones. The rights are only valid for the forum sections, corresponding to the products you have purchased. After verification of your status & approval by our customer service team, you will be able to actively participate in our forum's discussions.