My 1999 Subaru Legacy wont start thought the battery was shot so i relplaced it but it still just makes a click sound when i turn the key the radio still works but car wont start can you help?

The biggest nistake a would-be mechanic can do is to start buying and replacing parts hoping to eventually solve whatever is wrong with the vehicle. It is much wiser to invest $11-$14 on a repair manual (Chilton or Haynes) for your vehicle and use the trouble-shooting guides to help find the cause(s) of the problem. If you can't afford to buy a manual, they are availble for checkout at most public libraries. At any rate, the click you describe more than likely indicates a bad starter solenoid/relay. But don't just run out and buy one - you can check it out using the manual as a guide. If nothing else, whichever component (battery, starter, etc,( you think may be At Fault can be checked at your auto parts store (usually at no charge( before you invest in a replacement.