The real treat is that many of the best webinars are totally FREE! Even some of the paid websites offer free webinars: http://www.americanancestors.org/online-seminars/ from NEHGS and http://learn.ancestry.com/LearnMore/Webinars.aspx from Ancestry are notable entries in this category.
Another source for free, great webinars is the genealogy software manufacturing community. These webinars are not just sessions on how to use their specific software, although this topic is often covered in these webinars, too. I’ve included specific links to the webinar (online seminar) pages for some of the most common genealogy software sites:
Family Tree Maker: http://www.familytreemaker.com/Learn/Webinars
Some of these webinars are given at specific times and permit the audience to ask (type) questions for the presenter to answer. Some of these webinars are only available for a short period of time. Some of these webinars are lengthy and some are only 15 or 20 minutes.
You will certainly learn something new to help you in your ancestor search FOR FREE!