If you were to log in, you'd be able to get more information on your fellow community member.
I think the article is pretty good and comprehensive considering that it was written in 1996. But I recommend adding some newer information, specifically: (1) Vanguard's Total Stock Market tracing Wilshire 5000 is frequently preferable to S&P500, because it is more diversified and it does not buy/sell as frequently as stocks move in and out of the index. (2) Exchange Traded Funds (ETF) are a good alternative to index mutual funds for those who do not dollar-cost-average into it. (3) Treasury Inflation Protection Securities (TIPS) are worth considering, especially by retirees. (4) Single Premium Immediate Annuities (SPIA) may offer a better way not to outlive one's money than a frequently recommended Safe Withdrawal Rate (SWR) scheme. (Note that these are different from variable annuities that generate huge profits to insurance agents and less value to their customers.) These and many other topics are discussed at the Bogleheads Forum which I linked below.