Notwithstanding all of the good information given in this thread your instructor should, as part of your introductory training, review in detail the gear you'll be using to dive and, during the pool training sessions, have you assemble and disassemble your gear several times.
Scuba diving, like every other sport/activity, has its own jargon. It can be daunting at first but take your time to make sure you really understand what's being taught. A good teacher will patiently explain things, don't be afraid to ask questions (there are no stupid questions) and don't accept a "don't worry about it" as an answer.
Scuba diving, like every other sport/activity, has its own jargon. It can be daunting at first but take your time to make sure you really understand what's being taught. A good teacher will patiently explain things, don't be afraid to ask questions (there are no stupid questions) and don't accept a "don't worry about it" as an answer.