Few problems

Where to start. The car is leaking coolant and its shooting from the thermostat housing right under the cap so I look at it and its a hole that was made in it and it looks like if its over flowing or some type of leak slot but im losing fluid so is it the wrong part or do I need to replace my water pump. I put and new thermostat and housing on it and its still doing it I also have a power steering leak and I located a high pressure line I assume with a electronic connector with some type of rubber or silicone on the end where the wires are it looks like it could be the switch itself or the connector? Last but not least I had a hard kick when shifting to like 2nd gear I think so I changed the drive belt or serpentine belt because it looked worn it shifts better but it still over heats and leaks fluid plus I got a code that said transmission shifter cable? And throttle edal position sensor a circuit range/performance plus idle arm control system and throttle actuator control system