Well done for buying Campy. Ergolevers are the best functional and aesthetic levers on the market. And they come from the home of cycling. There is another, Japanese brand available, but it looks like spacejunk and is functionally inferior to Campagnolo. You will note that Ergolevers allow you to brake and change gears at the same time with absolute confidence and control. Also, they allow you to change multiple gears in one sweep of the lever, and even to change front and rear gears at the same time. Bella!
The easiest way to remember the shifing pattern for Ergolevers is as follows: when you are looking down on the lever, whether the left or right lever, you always move the shifter in the direction you want the chain to move (this of course follows the beautiful simplicity and inherent logic of all Campy components).
For example, with the left lever, you shift the lever behind the brake lever to the right to shift the chain from the smaller chainring to the larger chainring (and conversely with the thumb shifter).
For the rear derailleur, you shift the thumb shifter to the right to shift from a lower gear (bigger sprocket) to a higher gear (smaller sprocket) and conversely you shift the lever behind the brake lever to the left to shift from a higher gear to a lower gear.
Best of luck.
Cheers