Rom hackers?

[tangodownNZ]

Does anybody know how to rom hack. I need some help to get started please.
I have been looking at debugging so I can step through the program line by line. But I can not find any step by step instructions for dummies on you tube.
Any help would be very much appreciated.
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Hi there, I am trying to learn how to hack an old arcade game called Daytona USA.
I want to turn off catch up (handicap mode). It allows the cars behind you to catch up to make the game more competitive. But the this mode is switched off by the game when playing against the computer, so it must be possible to turn it off in the script somehow.
When “no handicap mode” is used it introduces tyre wear. But you need to pit every lap because the car becomes uncontrollable. So really I just need to turn off tyre wear if this makes things easier.
I use the model 2 emulator to play this game.
It looks like I need to run debug mode so I can watch the program running line by line. But I cannot find any good tutorials for dummies with step by step instructions.
I don’t want to learn about writing an entire program, I just want to know how to hack and change this particular game. And I will learn debug ect at the same time.

Any help would be greatly appreciated. Thank you

No handicap mode: The game keeps races close by increasing the top speed of any car that is not in first place, which gives all players a chance to catch up. To disable this option (On "Twin Type" games only), press all four view change buttons at the course selection screen. A small white point will appear in the upper left corner of the screen. In multi-player races, No Handicap Mode will only be activated if more than half of the players enter this code. If the machine is configured for Grand Prix mode or Endurance mode as described above, entering the No Handicap Mode will have added effect of wearing away your tires during game. The amount of tire wear depends on your mileage and speed.