Ah, resurrecting an engine from a long slumber.
I would pull the plugs, number your plug wires first, and inspect them. Plenty of spark plug reading charts out there to help you decipher what's going on. Depending on how long it has slept you may even see lead deposits on them, lol. Example Chart
This will give you an idea what is going on. If it passes muster here put some oil down the cylinders and see if you can turn the engine over by hand, using the fan as your lever. This will tell you how tight it is and yes you should be able to do that if nothing serious is going on. You may have to tighten up the belt though.
If that all passes muster, put the plugs and wires back in. Take the distributor cap off and inspect the inside of the distributor. Here's a decent thread talking about what it looks like in there, or should look like. Here's a link to an article on this from our download section
If that passes muster then it's time to look at the fuel delivery system. If it has old gas in there, drain it out. There is a drain plug in the bottom of the tank. Take the sending unit out and inspect the tank for rust. New tanks can be had for most. Odds are the carb needs taken apart, cleaned and rebuilt not too tough a job. Here's a thread about that, In the downloads section here there is a Carter factory book, if you have a B&B carb as well as one for the Stromberg. Inspect the rubber fuel lines for failure.
Give hte wiring a real good look, not uncommon for the insulation to be falling off, we fon;t want any electrical fires.
Once you sort thru all this then, maybe, you will be ready to start it up