Aid climbing has a vocabulary that is unique the climbing circle.  Here are some common terms and their definition or what they should mean.  Anyone who rock climbs long enough will eventually hear some of these terms or may even become interested in trying aiding.
Aid  Climbing Dictionary
A1 Aid rating system that denotes a (bomber) [...]

Getting starting in climbing is more complex than it used to be, climbers have a greater selection of gear, and sometimes it is hard to find someone with the experience necessary to get good advice from. In this article I want to present recommendation for rock climbing gear that works, is reliable and advice for selecting the most appropriate gear for your type of use. It will cover basic essentials: harness selection, helmets, belay devices, and shoes.