Many of these climbers don't even venture outside. They find the indoor world rich enough to satisfy them without going further afield. There are all those gadgets, all those terms. Lots of climbers tell stories about being intimidated, not by the climbing itself, but by the culture and the technology. All it takes is one day out on the rock and, I assure you, any sense of intimidation disappears.
Mystery turns to understanding.
Most important for any beginner is to find others who share the interest. If there is an indoor climbing gym, you are all set. Simply visit, get a lesson or two, and don't be shy. Everyone in the place was once in your position, and most climbers will be enthusiastic about bringing another into the fold. If you live in an area with some natural cliffs, there will probably be an outdoor gear store whose clerks are in the know.