Channel subscriptions are the main way that you engage with BrightTALK content. The channels to which you subscribe are aggregated on your My BrightTALK page, which you can then use to discover additional relevant content that meets your interests. In addition, the owners of your subscribed channels can then contact you to suggest additional events you might be interested in (subject to your email preferences.)
To subscribe to a channel, simply play any of the webinars or videos within that channel.
You can visit the following support article which explains how to unsubscribe from a channel: How-can-I-unsubscribe-from-a-channel