Best thing u can do, is DRAIN the old oil inside it, its probably realy bad condition. You can get a oil and a filter on special for like 16$ from autozone. Thats probly best way to have car running is OIL.
Next main issue is FILTERS, AIR FILTER, if it had one inside it, you need to check ur car for JUNK, insects and leafs inside the AIR SYSTEM and change the AIR filter.
Next u can use a FUEL system cleaner and Fuel injector cleaner or carb cleaner its an FUEL additive. Oh yes Put in NEW FUEL, old fuel is BAD! Old fuel might even have a LOT of water in it. If u want u can even drain it. After using any kind of fuel system cleaner, i would burn some gas. And eventualy replace oil and oil filter again, u can check dipstick, it will probably get PITCH BLACK again realy fast. U want it to be golden or dark golden thats normal for new oil.
U can also replace coolant, before u start driving, drain it completly and then fill it up.
As far as what u wrote about "priming the oil" you dont realy need to do that. Just Disconnect the SPARK PLUGS and CRANK the engine a few times with the starter. This way it wont fire. Toyota usualy desings engines so if they are emptied, they will distribute oil and water or coolant all over even when empied and refilled.
If you have problems running the car, i would check your FUEL filter and FUEL PUMP. Drain the FUEL from fuel tank. and possibly change the filter. U can dissconnect the fuel line at the injectors or carbutrator and check if it pisses oil either when u turn key or crank engine.
If ur have a carb or fuel injected car, u can also use CARB CLEANER spray, make sure its safe for ur car though. Have some one else spray it inside carburator or intake while u crank car, and push the gas. If the car runs then and not before u have ok engine, but crappy fuel delivery.
Well thats bout it, I think. Basic idea is u aint supposed to have a car that sits still or it dies, u need to start it at least once a month to keep it running well. Car i got was standing for like 2 years, but still ok. Oil was pitch black, and some burned oil inside engine, means that previous owner used crapy oil and it burned inside engine, or not enuff of it.

Im so jealous, i want mr2 too!