(Not parent)

Basically "ah-in" or "ah-yin" ("ah" being pronounced like when a doctor tells you "open your mouth and say ah"). It makes the use of that letter much closer to "a" (א or ה in Hebrew).

We don't really involve the deep part of the throat, though I think it's pretty well known that you're "supposed to".

very close to א and ה... They all sound like Ah/I/Uh/Eh depending on the punctuation