Have fresh oil in it and clean plugs. Make sure you have enough coolant in it.
I would put a little oil in each cylinder and turn it by hand, to make sure it is free.
Next, with all the plugs still out, I would turn it with the starter..........That will build uo some oil pressure and get oil going throughout the engine.
Put the plugs in, check for spark and make sure timing is close. Start her up.............