It is always a great experience hosting and teaching data carpentry (and/or software carpentry) workshop at Iowa State University. Selfishly, this is because I am currently at Iowa State University, but also because we have many local instructors with great teach experiences and various teaching styles that I can learn from. Although it is a little bit delayed, I do want to summize some of the things we learned and maybe the experience could be useful for me as well as someone else in the future.