Enountering problems left and right
Ok I went to the auto parts store earlier and got a new brake light switch. I removed the old one, put the new one in, and realized that it wasn't going to help. At the top of the brake pedal itself, where the switch comes in contact with the pedal, I found it was just an open hole. I pressed the switch button down with my finger and the lights turned off. Next I found the rubber stopper that belonged in the brake pedal hole. Put the old switch on and it worked with no problem.

I solved one problem just to create another. While I was messing with the brake switch, my stepdad was under the hood trying to find a faulty ground. As he was tracing the Battery Ground, he noticed it was just shaking around freely. It is not cut or damaged and has a connecter piece with two bent sides and a hole thru the center.
What do I connect it to?(chassis, firewall, starter,etc?) What I don't uderstand is how my car has been running without it attached this entire time.

I was also thinking maybe my dad shook it loose of it's mount??? I gave up on the ground and just attached it to part of the body with a screw. I shut the hood, got in to leave, and what happens?
The car won't start. Heck, it won't even turn over now. The lights in the dash light up but the only sound I hear is the turning of the key in my hand.
Help Me Please!!!
it the silver thing in between the caution sign on the post where it tells if your online if you need anything else just let me know
It wont let me do it yet because im too new to the site