Hi,
YouTube decided to show me this yesterday: https://www.youtube.com/watch?v=-gie2dhqP2c. It's a pretty good introductory description of sleep disordered breathing including flow limitations, hypopneas, obstructive apneas, and central apneas.
Hope it helps!
Sleep Disorder Breathing Video
Sleep Disorder Breathing Video
Sleep loss is a terrible thing. People get grumpy, short-tempered, etc. That happens here even among the generally friendly. Try not to take it personally.