<prompt> Human: I rolled over my 401k from my last job just shy of 8,000 into a Vanguard account. The current mix is 100 short-term reserves. Im completely lost on what Im supposed to do with this account now. Do I need to switch up this mix? How do I even do that?  <response>: Buy the Vanguard Total Stock Market Index Investor Shares opt to reinvest your dividends and capital gains.And you are done. 