Before you have the motor started and while you are checking the plugs, squirt a little oil into each cylinder, new plugs and points(depending on the motor type) wouldn't hurt but are not a must have. Also give it an oil change to drain out all the c**p and condensation that has gathered inside the sump. make sure you fit a good filter as well and be prepared to do this again within 500Km. (oil change and filter only) Charge up the battery and make sure it is still alright as well, they can collapse if unused for long periods. Jump starting will also help if you have another vehicle handy, or a mate helping. Once you get it started let it warm up. Take it for a couple of short trips if there is nothing leaking out of the motor anywhere, to make sure there is nothing wrong or broken, then drive it for at least a couple of hours to warm everything up, dry out and cook out all the wetness still inside the motor. It hides in strange places, and it also helps with drying out the insides of the starter and the alternator as well. Take a drive into a hilly area for best results. Long flat runs don't do much. Yeah, I know, it sounds like I live in Tasmania or the South Island of New Zealand. Things go rusty and mouldy in Brisbane and Darwin too.