I do not have experience on experimental designs. I want to prepare these topics for my upcoming interviews. How should I get started?

I have been working as a DS for past 3 years. I want to switch my domain and want to prepare for interviews in coming months. I work heavily on the modeling and engineering side (+PM ish work ). I do not have any experience on experimental designs. Can anyone suggest some good sources/topics on this?

datascience experience experimental interviews topics