I don't have a specific video to recommend, but it looks like a general youtube search for how to locate the prostate will turn up several options that explain the process with visual aids that you might find more helpful than a static illustration.
I was able to find a multitude of diagrams as to how to find your prostate just by googling how to find your prostate and going to images. Were those hard to understand?
I hate the word homophobia. It's not a phobia. You're not scared. You're an asshole.