Live Meeting is really one of the first online services Microsoft has provided. Given that it is an online service, you don’t get a nice packaged CD and manual sent to you when the product is changed.
Without the manuals and CD you might wonder where you can find the Release Notes, well it is no secret, they are available on the Live Meeting website on Microsoft.com
I highly recommend you take a look at the recent releases and see what changes have been delivered to the service and what new or changed functions you can take advantage of. Download them here