One place that I like but really haven't gotten to do much of is http://www.photographyschoolhouse.com/
. They do a lot of free webinars. For awhile Sandy Puc, who is a very well known children's photographer, was doing webinars on here. I don't think she does them as much any longer. I highly recommend checking the site out. The webinars are mostly free. Now and then they have the ditto cams which I think are the playbacks which you have to pay to watch. If you sign up to be a member, which is free, they email the upcoming webinars and you can register for them. I have gotten so much useful info when I had the time to watch them I do keep meaning to make the time to watch them again though.