There are a variety of teleseminars available to the public; some are performed live while others only let you listen in on a prerecorded lecture. These can come as a onetime event or be spread over several sessions.
One of the major benefits of a teleseminar is that at the end you can have your questions answered by the speaker. This Q and A is very valuable because you get the same kind of attention as if you were attending an in person conference but only for a fraction of the price.
In the internet marketing industry there are a bunch of so called gurus who will gladly charge you an arm and a leg to attend their seminar. To get the most out of your experience you should only join teleseminars led by professionals who you know something about.
For instance if you have been successfully using lead generation software created by a marketer who is now hosting a teleseminar on how to increase profits with his program. That would be an ideal call to join since you are more likely to benefit from that than a random all encompassing call lacking specifics.
However if you do not have this kind of experience with any prominent member of the internet marketing community then the best alternative is research.
You can simply check the search engines for peoples past experiences with the teleseminar you are considering. You can get a fairly accurate response rather quickly by sifting through customer feedback and save yourself time, money, and heartache.
Another thing that is critical to you getting the most out of a teleseminar is the topic. There are some concepts that just cannot be clearly explained over the phone. So if the topic is something technical or hands on check to see if the speaker will be providing some additional resources like a website at which you can follow along, otherwise it's just not worth it.
These days there are many teleseminars that are available for no charge at all. The thing with these is that everybody loves free things but free is not always free. Obviously if the speaker is inviting you for no cost they are looking for another way to get you to buy something. Often these free seminars turn into an extended sales pitch for the speaker's latest product or service.
So again the best advice would be to research what past customers have said about the free seminar and find out if it's worth your time. Otherwise you might be stuck listening to a hard sell for over an hour waiting for quality information that is just not going to be there.
Overall, if you research the speakers and their products, find a topic that you enjoy, and take part in the question portion you should have a pleasant experience with a teleseminar.