I enjoyed this articled called &quot;Principal Components Analysis for Dummies&quot; that illustrates eigenvectors and eigenvalues. <a href="https:&#x2F;&#x2F;georgemdallas.wordpress.com&#x2F;2013&#x2F;10&#x2F;30&#x2F;principal-component-analysis-4-dummies-eigenvectors-eigenvalues-and-dimension-reduction&#x2F;" rel="nofollow">https:&#x2F;&#x2F;georgemdallas.wordpress.com&#x2F;2013&#x2F;10&#x2F;30&#x2F;principal-com...</a>