If we had to preach to thousands year after year, and never rescued but one soul, that one soul would be a full reward for all our labour, for a soul is of countless price.
The best way in my view is to just buy a low-cost index fund and keep buying it regularly over time, because you'll be buying into a wonderful industry, which in effect is all of American industry. . . People ought to sit back and relax and keep accumulating over time.