Rig components may not be a problem with experience people who have been working on the rig for awhile. However, new people will totally blind what each equipment is. I remember since I was a new hand on the rig. No one taught me what the rotary drilling is, how equipment works or even what the equipment is called. I took times several months to know the drilling rig and its components.
Currently, everything is changed in a better way on how we learn thing. University of Texas at Austin publishes the very useful book named “The Rotary Rig and Its Components” which is especially for new people on the rig. The language is written in a non-technical perspective so readers can learn the details without any drilling background.