I have published more than 250 Google tools tutorial videos over the last few years. But if my dry screencasts aren't your style, try Google's EDU in 90 series of videos. EDU in 90 offers 38 videos designed to introduce viewers to some of the things that students can do with Google's various products like Google Drawings, Google Arts & Culture, and Google Earth. You can watch the entire playlist here or watch a couple of the sample videos that I have embedded below.
EDU in 90: Google Arts & Culture
EDU in 90: Google Drawings in the Classroom