Jack will introduce the bidding where you decide which suit will be trumps or whether to play without trumps. We then play out the cards.
The unusual 2NT bid is a popular convention but not a bid we have a chance to bid often. It’s very descriptive as we tell partner 10 of the 13 cards in our hand in one go. This allows us to figure out where we want to play fairly quickly and get in the opposition’s way when it’s right to.