Before buying, decide between the two main vehicles for index investing:
Trade once daily after markets close. They allow you to invest exact dollar amounts (e.g., $500), but some may have higher initial minimum requirements. 2. Search and Research buying index funds on etrade
Trade like stocks throughout the day. They are generally more tax-efficient and have no investment minimums beyond the price of a single share (though many brokers allow fractional shares). Before buying, decide between the two main vehicles