[actsasbuffoon]

You can also invest directly into an index fund rather than going through an ETF. Depending on your situation, both have pros/cons.

Many companies offer index funds, though Vanguard's seem particularly popular (possibly because they invented index funds, IIRC).

[jjeaff]

They are also popular because the company is owned by the share holders of their funds. So huge dividends and salaries aren't going to employees or shareholders.