Some Prolog courses on the web:

• Short tutorial
• Not so short tutorial
• Longer Tutorial, uses Sicstus Prolog
• Longer Prolog tutorial
• Czech tutorial
• Prolog course/tutorial at Leeds using Sicstus Prolog
• Prolog course at Univ Birmingham UK, uses Sicstus Prolog
• Prolog course at Cardiff, simple, uses WinProlog
• U. Texas course using Bratko's book "AI and Prolog", not much info
• CalPoly Pomona Prolog tutorial (obtain permission first) uses SWI Prolog