Missouri S&T (known as UM Rolla a while back) has a number of courses that are available through their YouTube channel. One such course is their GeoEng 341 course, Engineering Geology and Geotechnics taught by Dr. David Rogers. You can watch the entire series of 15 lectures totaling over 32 hours on You-Tube! Check out the first lecture below.
More videos! French Company G.T.S. has posted some great videos on rockfall protection systems on their YouTube channel. I don’t speak French, so I can’t give you any more info on the company (although their website looks like it has plenty of info!). But the videos cover the preparation of, drilling for, and installation or rockfall protection fences and barriers as well as a couple of general rockfall ones. They just have video with background music, so no worries about a language barrier. You can watch the installation video below.