Principal Component is hard to explain without getting into Eigen vectors and Eigen values. So loved this when i saw this video. Its explanation is intuitive and explains everything in simple lay man’s terms.
Juster under 1 minute 33 second, this video will surely enlighten you on PCA.
And for those who are more mathematically inclined the following video is a must. At close to 14 mins, it can save you hours of studying a textbook.