I am interested in seeing what companies look for and how i might contact them at a later time since i am not looking for a job at this moment.
You just need to go there, and ask them for any information. You don't need to looking for a job.
Yeah it is a good way to look for what language they expect, what skill they require, or what behavior they want from us. About the contact, we can just ask them or look it up, and it is a good way to show our interest, too.