Webinars

What are authorSTREAM webinars? How can I benefit from these webinars?
How can I attend a training session on the topic of my choice on my browser?
How can I get in touch with the presenter for a query?
Do I need to register to get updates on the upcoming webinars?
I want to view an archived webinar recording of my choice but I can’t access. What should I do?
I want to attend the upcoming live webinar but my time does not match. What should I do?
Is it trustworthy to download the recording of a training session in an executable file on my system?