Question: what is the best way to invest in index funds?
Answer: Check your 401(k) ...  If you don't have a 401(k), open an IRA. ...  Consider a brokerage account. ...  Decide what market(s) you want to invest in. ...  Check the minimum investment amount. ...  Look for index funds with expense ratios around 0.5% ...  Fund your account. ...  Set up automatic contributions.