Hello to all again, another question, what the hell else am I good for, eh?

When I go to bottle, I am to place a lolly as Coopers video tape calls it,
or what is labled a carbonation tablet (whihc I think has more to do than
just carbonation), I think this is whats called priming?? Anyway, the
tape said to drop in two of them in the bottle then tap in the brew. Two
as it was a 16oz bottle, 1 for a 12oz bottle, so does that mean 3 for a
22oz bottle so I assUme? Two seems exessive in a 16oz bottle which I have,
the 16oz plastic P.E.T. kind. What is a typical recommendation here, as I
don't want to over do it and make it a brew that gives a headache, bad or
off taste, etc... Thanks! --BF