You push the TOGA buttons to bring the flight directors into Go Around mode, and you shove the thrust levers forwards, and perhaps the autothrottle will assist, maybe not, and you're away.
Simples really.
The A/T has a habit of failing, and is indeed inhibited in a touch and go scenario, so good airmanship dictates you manually apply thrust as well.
If you tap the toga buttons then place your hand back on the control column then you are an utter idiot who has no place in the flight deck. Definitely not mine.
But who does 'airmanship' any more these days? Certainly not muppets like this coming up through the ranks.
Good grief, give me strength.