Hi:
First look behind the headlight for the serial number. write this number down.
As long as the bike not siting out in the rain for years it can be rebuilt. Check the gas tank by removing the gas cap and looking inside with a flashlight for rust. The carb should be taken off and cleaned and rebuilt, aslo the gas tank should be cleaned. Most shops can do this for you.
If you have access to a bicycle tire pump. Pump up the tires to see if they hold air. Look at the tires checking for Dry Rot. This will look like cracks in the sidewalls.
You can probally find a key for you bike at Honda. On the ignition there is a number in the area where the key goes into the ignition switch. Write it down and take it to your dealer. He will use this number as referance to order a new key.
Lift the seat. find the battery. On the side of the batery is a number. Ex: 6N63B is a battery for a 1973 Honda MT 125. Double check me on this number, but I believe this is the battery you need. Your dealer will be able to get a battery and charge it for you. There are only 2 bolts to fasten the battery. There is a plus + and a minus - side on top of the battery. The RED wire goes to the plus, the BLACK wire goes to the minus.
You can also order a service manual for your bike. Hayes, and Chilton are some names of books.
This will get you started. Don't be afraid of the unknown. You will learn as you go along. I'm sure your father would be proud of your effort.
My name is Lee Curry, Owner of Proformance Cycle. Myself and others on the message board will help you. Good luck!
