For the antifreeze, check the expansion tank - there are some o rings on this that can go (if you search the board you'll see the threads on this).
As far as the leak, open the hood and look around. Check around the valve cover, those gaskets can leak - mine weeps just a tad when I drive the car hard. You could also put it up on ramps and crawl under with the car running to see where it's coming from.