In Blender 3d, there are a lot of ways to edit objects. In this demonstration, I go over the basics of how mesh objects are made (vertices, edges, and faces), and the basics of how you can change and edit those objects.
This video is recorded DURING my high school media class, so you will hear sniffles, closing doors, and all sorts of interruptions. Hopefully those distractions will not ruin the content. More videos and other tutorials can be found on my website at http://www.weisbrodimaging.com/classes/