First step here is to connect the battery-pack, which should produce a red light. You don't want one of these if you're flying airliners, but here they mean that you have at least fitted the connector the right way round. Then simply refer to p.41 of the manual and don't bother me.
This RX has happily been linked before in order to fly one of my super-scale drones. It was done elsewhere, but I know it's good to go because that red light turns green if I turn on the TX and turns red again when it's powered down. Houston, we are looking good...