go to vanguard and invest your money in several different, diverse, low-cost funds. index funds are great, but you can't buy only index funds and be diverse. buy some REITs, some bonds, etc..
spread the money out, no more than 20% in any single fund unless the fund itself is diverse.
spread the money out, no more than 20% in any single fund unless the fund itself is diverse.
sit on it for a long time.
thats it.