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Does your Ciao have a black switch on top of the headlight? If it does this is your ignition/headlight switch. OFF postion is 11 oclock, IGNITION ON is at 12 oclock and IGNITION/HEADLIGHT ON is at 1 oclock position. You must ALSO set the switch on the right handle bar to RUN.
If it has no black switch on top of the headlight you only need to have the switch on the right handle bar in the RUN position.
Is the gas petcock on the right side of the bike turned straight up or straight down?
Did you mix 2.5 ounces of 2 cycle motor oil with a gallon of gas and pour some of it in the tank?
With each attempt to start it, you must push the choke down. Thin silver piece of metal, right side of the bike, under the center cover. It should pop up each time you twist the throttle.
Your tail light bulb should have two filaments in it. When you take it out and hold it up to the light can you see two complete filaments or is one burned out? Replace the bulb if one or more is burned out. Look on the side of the brass bulb casing for the volts and watts. If you can't find a bulb locally email me or contact www.vespasupershop.com
Good luck