tbh i depends on what kind of person you are. If you really like video games then go ahead but i guess what you are asking is how and that really doesnt answr your question but
1) YOU HAVE TO BE FULLY COMMITTED/ MOTIVATED TO THE GAME
that is the number 1 step.Also try to do a little research on the game and the systems, watch videos on how to take the system apart and back together.
I HAVE FAITH IN YOU!!! YOU CAN DO IT!!! TAKE CHARGE