If your car were parked correctly then it will need lesser effort but if you parked without taking precautions than it needs a loads of efforts. First if you haven't disconnected the battery, your battery will be discharged for sure, it might also harm electricals of the car. We will also suggest you to check the wirings, that it is not damaged and cut. If you haven't put it on jack stand, the tyres are now useless, you will need to replace all four tyres. The engine oil need to be changed even before you fire the engine, as the older engine oil might have bigger particles at bottom, which can damage the engine. Apart from this a general servicing, new coolant, brake shoes, brake and transmission fluid and general servicing will make your car road ready again.