As the video you watched in Step 1 suggested, go to
http://www.webquest.org,
http://questgarden.com/search/ (I think this link is the best one for finding WebQuests) and/or Google and find WebQuests for your grade level and content area(s) of interest. This will help you to get a better idea of what WebQuests look like and the types of tasks/content you might address with this instructional model. When you have done some searching, come back here.