Brake paddle went all the way to the floor. where is this thing local

that is IT?

Master cylinder brake booster bad wheel cylinders hole in a brake line

sound's like a leak, which could be a loose fitting or a bag hose you can not fix it untill you know where the fluid is comming from

IF your brake pedal went to the floor, then you have a brake fluid leak somewhere. Even though you filled the reservoir with brake fluid, the system now has air in it. The first thing you need to do is find the leak and repair it. Most likely a wheel cylinder or caliper piston leaking. Once the repair is done, you will need to bleed the air from the rake system. Since you don't know anything about the brake system, I would strongly suggest having a professional mechanic do the work. If it is not done right, your brakes could fail.

Rear brake adjusters on the brake shoes may need to be set up.

When you push the caliper piston in to install the new brake pads, you have to keep pumping the brake paddle after the new pads and every thing is put back together, the paddle will come back up, do it with the engine off.

you must have a leak in your brakes! check your brake fluid! They may work for now but after all your brake fluid is pushed out they wont work. You better take a look underneath and get someone to press on the brakes to see where it is leaking out. You can keep toping up the brake fluid and that might get you by for a while.

Check for brake fluid leak's at all wheel's. but more then likely it going to be your master cylinder, pump brake paddle up and hold with lots of pressure if paddle goes down bad master cylinder.Good luck.

If you did not open the bleeders just keep pumping the brakes paddle will come back up, if you did open the bleeders have some one pump the paddle on hold down open bleeder do this on both sides till no more air comes out.

air in the brake lines can cause that, bleed the brakes out, not very difficult if u know anything bout brakes, i can give u steps if u dont know how