MIXING YOU OWN FERT...

I READ SOMEWHERE THAT IF YOU MIX LIQUID SOAP,
  COKE A COLA ,AND I THINK VINEGAR, AND SOMETHING
  ELSE THAT THIS COULD HELP MY LAWN. BECAUSE THE PROPERTY'S IN EACH INGREDIENT CAN HELP IN ONE WAY
OR ANOTHER.DOES ANYONE ELSE KNOW OF THIS,AND
PLEASE TELL ME WHAT IS THE COMBO OF STUFF
  TO ADD.

Please don't pursue this.  These "recipes" are often loaded with stuff that is good for your growies, and stuff that is bad for your growies.  It is also often far more expensive than buying the right stuff or using the right technique to fit the problem.

Tell me what are you trying to do and I'll advise you on how to go about it.

I agree with Paul that using the right product for the right application is by far the better thing to pursue.  I have a hard time imagining that the combination of things that you've listed could possibly be a good thing to create and then pour onto your soil...  although it sounds guaranteed to screw around with the pH and possibly kill off the good fauna living in the soil.  What is it that you're actually trying to accomplish and why is it that you think that?