staying started on 2002 Dodge Ram 1500

A few months back my truck started to die immediately after i turned the key over. Then it would happen periodically until today now it will not start and stay started at all. What or where do i start to look for the cause?

Asked by for the 2002 Dodge Ram 1500
Find a phone number for a towing service and tow it to an ASE certified repair shop.