Gears?

My front left-hand wheel has been making a clicking noise when U turn corners sharply for the past month. Then yesterday I was driving came to lights and the car would not drive, put in reverse would not reverse. There was a noise when I changed gears but nothing. So, I got it towed home and then started it this morning. It drives forward then I tried to reverse it went backwards then back in drive and a noise and wouldn't go anywhere just rev. Please help.