Today when I came to a stop my brake light came on,and I loss alot of brake pressure. When i took a look under my car i saw a big puddle of brake fluid by my right rear (if u are sittin in the car). I didn't get to get a good look at it good yet but,It dosen't look like its the line outside of the drum, but seems like its leaking straight out the crack in the back of the brake drum (where it fits over the shoes). I wasn't doing any excessive or hard braking before that. Would it be that the line busted ? how hard or easy is this to fix, and how to do it? Thanx for all ur help

There's no rubber line there. Your wheel cylinder on that side has come apart, probably because the self-adjusters don't work, so the shoes can move so far that the WC just exploded.

A WC kit is about $10. But you probably need the hardware kit too, and some shoes, and your drums turned. Whatever you do to that side, do the same to the other, it's in the same shape, and the brakes don't behave well at all when one side works differently from the other.

Take the wheel and the drum off, you'll see what has happened and how to fix it, it's pretty much self-evident.