How much outboard experience have you had? Finding one of those red manuals will be your best guide for sure. Do you have all the boat wiring/harness for the engine? It will be tough to make the electric starting work without the boat wiring/junction box.
The next thing to do is check the basics. Check compression, then drain/inspect the gear lube. There are two drain fill screws on the gearcase, one above the anti ventilation plate, and the other screw is underneath the gearcase snout towards the front. Good oil will probably be dark in color. “Milkly colored” lube is not a big concern, a slight water leak. Raw water is a big problem, as is not oil coming out at all! Do not remove that little phillips head screw down there, the inner shift linkage will come apart internally.
