long story short, don't trust any climber under the age of 45
unless it's like alex honnold or someone of that caliber
I disagree, but I am only 27. Personaly there are a lot of climbers under 45 I would trust before honnold. You have to have the same risk tolerance to really feel comfortable climbing with someone.
Also someone mentioned youtube videos, some of those are a little suspect, but most are good. I like the videos on this site. http://www.climbinglife.com/rocks/instructional-videos