I'm sorry, but this subject has been rehashed SO often, and the information being sought is SO elementary and obvious, that I fully expected there to be more responses of the "look before you ask, as****le!" variety than there would be sincere informational answers.

Almost didn't even bother to look in.

Lo and behold, while there were the obligatory objections to even opening this old can of worms ~ it's pretty simple stuff, after all, and it does get old after a while ~ there were actually a couple of helpful straightforward reponses, plus at least one hint about "advanced" capo usage (employing two of them, at different frets), and one bit I actually never knew before. I didn't know about the high-action capo designed to fit under the strings. Makes sense; that would be the only way to capo up without puling the action down too tight for slide playing.

But, really, unidentified GUEST who asked "How do you use a guitar capo on an acoustic guitar?" ~ was that actually a serious question? Is it possible that you really didn't know that ~ assuming that you do know what a capo IS, and how to use it on a non-acoustic guitar?

Or were you just stirring up trouble, trying to bait someone into (A) blowing a gasket and posting a serious tirade, or (B) resorting to sarcasm?

If (A), you failed. The last two messages may have been sincere efforts to explain the painfully obvious. I can't tell whether they come from a spirit of sarcasm or not ~ which is why I admire them!