Paul's Dream - II Corinthians 12:1 -

II Corinthians 12:1:
It is not expedient for me doubtless to glory. I will come to visions and revelations of the Lord.
II Corinthians 12:2:
I knew a man in Christ above fourteen years ago, (whether in the body, I cannot tell; or whether out of the body, I cannot tell: God knoweth;) such an one caught up to the third heaven.
II Corinthians 12:3:
And I knew such a man, (whether in the body, or out of the body, I cannot tell: God knoweth;)
II Corinthians 12:4:
How that he was caught up into paradise, and heard unspeakable words, which it is not lawful for a man to utter.
II Corinthians 12:5:
Of such an one will I glory: yet of myself I will not glory, but in mine infirmities.

Could someone explain what is going on here? Is Paul talking about when he was stoned in Acts? I think I understand, but I don't want to bloviate something incorrect here and confuse everyone else!