How Do I Connect to a Device When Using a Reverse Shell?

Is Lhost the IP adress I want my target machine to connect to? If so how do I what command do I use to target the machine I want in the first place. I would imagine that without my target machine's IP address I wouldn't be able to redirect it anyhow. Someone please explain to me Reverse shell, more specifically Lhost and how do I connect to my target machine.