Hook the battery + to the starter, where it goes.
Hook the battery - to any metal spot of the engine.
Take a screwdriver and jump from the battery + connection to the "S" connection of the solenoid (start). The solenoid should have a "S" next to one of the connections.
No ground wire runs to the starter. It has a main power wire, and the solenoid usually has 2 connections "S" wich means start, and "r" wich means run. Its self grounding.