The answer to this question depends upon your situation and goals.
If you are near or at the beginning of your Lean Six Sigma career, we recommend beginning with either our Lean Six Sigma Yellow Belt or Green Belt training. Yellow Belt is best for an introduction, while Green Belt is ideal for those who really want to dive into Lean Six Sigma skills.
If you have been working with process improvement for a significant amount of time, our Lean Six Sigma Black Belt course may be better suited to your needs.