My 64 dart wont start

Hello, I am new to working on cars and my 64 Dart is having an issue. I was driving it to work and it got there fine. But when i went to lunch it wouldn't fire up. It turns over just fine and its getting gas. I also checked the spark plugs and they were not getting spark. I changed the coil and still have the same problem. Is there anything else i might be over looking?