1997 Acura RL Grease a 97 Acura RL

I have a sound coming from the passenger side by the control arm. Everytime I turn the wheel it makes this sound like metal on metal. I have read that it mite be a ball joint or a bushing. People have said that I can grease it with silicone grease. I can buy the grease gun, But my question is where do I start. Or how do I do it. Never have worked on my acura rl.
Or do you have any idea what it can be?

Thanks for you help,

Ray