Newbie 1970 Coupe - Rebuild

an engine needs air, fuel and spark to run, if you have some starting fluid spray around you can eliminate some possibilities, if there's any chance of the car starting, it'll fire with the starting fluid, if it starts and then dies, you've probably got an ignition problem or bad fuel, not too surprising if the car's been sitting, make sure all of your ignition components are shiny, clean, and tight, if you have ignition points, figure out how to set them correctly

Right, I would start with a dwell meter to set your points with
Check the breaker plate for being loose which makes the points bounce all over the place
Take a gas sample and make sure it is volatile. Make sure / be confident it will singe your face if you try to light a BBQ grille with the stuff

Just to be clear, when you say it won't fully turn over, do you mean it won't crank or it cranks but won't start.