I found the Delta Black Belt course to be one of the most useful business training courses that I have taken in over 10 years. I learned many extremely useful PowerPoint and Excel techniques that will help me to be more efficient, concise and impactful in explaining data going forward. I also learned the importance of simplifying my charts, to get across the main insight verses all insights. Something I have had trouble with in the past.
I found the course instructors to be fantastic, very knowledgeable about the content, able to encourage and instruct all levels of ability at the same time, and very friendly. They made the course enjoyable. The structure of 3 live classes separated by a few weeks packed with homework, helped to create muscle memory for all of the new techniques, so that what was learned in class will not be quickly forgotten.