Welder certification is not just a test; it is a true reflection of skill, knowledge, and technical preparation. This manual compiles the essential exercises for qualification in Shielded Metal Arc Welding (SMAW), TIG, MIG/MAG, Flux-Cored Arc Welding (FCAW), and Oxy-fuel welding, covering materials such as carbon steel, stainless steel, cast iron, and aluminium alloys, in all joint configurations: fillet welds, butt welds, pipe-to-plate, and pipe-to-pipe connections. Welding Practice Manual contains exercises backed by over 18,000 hours of training experience and the practical knowledge gained from preparing hundreds of welders for certification under ISO 9606 and ISO 15614 standards. However, this manual goes beyond listing exercises - it provides an innovative and structured learning approach, integrating key welding concepts that every professional should master. This manual is designed not only to help you pass a qualification test, but to understand, refine, and master welding at a professional level.