Motorcycle Repair: my fathers motorcycle, honda cb450, motorcycle repair

Question

my fathers 450   QUESTION: unfortunately its not a harley its a 1973 Honda cb450 but my question is how do i start restoring my fathers bike? its sat in our family's chicken house for over 20 years the gas tank is rusted the brake fluid has turned into a powder/gel the gas lines have dry rotted. I have never worked on a motorcycle before and i have no idea where to begin

ANSWER: When you say restoring the bike are you talking about tearing it to the bare frame and restoring from the ground up?
Mike

---------- FOLLOW-UP ----------

QUESTION: no just back into working condition

Answer
First thing you need to get is a service manual for your bike so you know the specs and how to work on it.
A bike sitting that long is not good. the seals are probably worn out as well as the bearings dried out or rusted. the motor will probably have to be rebuilt, because of rust as well as the carbs. the gas tank will have to be flushed and sealed. The master cylinders will have to be rebuilt or replaced and the lines flushed
Good luck and happy riding
Mike