Buzz wire with timer

Hi! I need to build a buzz wire game and I'm thinking of using arduino. I'm fairly new to arduino. I need to build a circuit with a buzzer that activates when there is conductivity. But I also need to add a timer to it. Before starting, the player must press a button to start/reset the timer, which stops when the handle of the game touchs the final of the game. Any ideas? Please help!

“I need to build a circuit . . .”

Why do you need to do this?

What electronics and software projects have you done previously?

Can I just wait until I have moved all the way to the end and then press start?