I need some help on my 305 engine.i need help putting in and wiring the distributor.its brand new and need hel

i need some help this might seem easy but im a starter.its a 1973 nova with a 305 and ive been buying everything new i bought the distributor with the spark plugs and the wires but dont know how to put it all together. i dont know where the first wire goes that prety much i need help on.the timming chain is in but i need help with the distributor's first point of start so if sombody out there can help me it will be very cool of u.thank you