CrunchEconometrix videos should be supported by relevant readings from econometrics textbooks, journal articles and other resources to properly harness the simplicity of the video tutorials.
CrunchEconometrix P.E.R.B.A. https://cruncheconometrix.teachable.com
CrunchEconometrix LinkedIn Page: https://www.linkedin.com/company/cruncheconometrix/
For Dataset: https://www.researchgate.net/publication/385558618_Principal_Component_Analysis_PCA_Dataset
For Stata Do-file: https://www.researchgate.net/publication/385558626_Stata_Dofile_to_Create_Index_Using_Principal_Component_Analysis_PCA