<prompt> Human: Finance graduate here working in the corporate world.Throughout my college career I was taught theory as most every student is.Is it accurate to assume I can use these techniques to start investing? Can I calculate some financial ratios and take a look at operating income and begin gauging whether or not to buy shares of a company? Im going to say no for obvious reasons.So then... Where can I truly begin learning how to make proper investment decisions? How do things really work? Where do I begin?Appreciate any insight.  <response>: Have you read about warren buffets million dollar bet? Passive indexing with low expenses pretty much always beats actively managed funds in the long term. Like the other guy said, Vtsax and relax 