Sweet.
First thing with any old bike.... involves several steps.
Make sure the battery is good and has a full charge. Trust me on this, especially if the bike has been sitting for a while
Air up the tires, and replace ones that are cracking, or worn from use.
Change ALL fluids, gas, oil, coolant, brake, ect..
Change the spark plug(s) and air filter (gas filter if equipped).
After all that, check for fuses, bulbs, and bolts that are loose or missing.
And usually on older bikes (which I always get stuck working on), they almost always need a carb cleaning. If in doubt, clean the carbs and get a rebuild kit. That will pretty much get the thing going.