I heartily endorse this.
Here is my best single piece of investment advice to them and to every member of Gen Y: Start saving and investing early. Einstein may never have said it (as claimed), but compound interest is a wonder of the world. And anybody can take advantage of it — it’s utterly egalitarian. If you do nothing else about your retirement, start saving early. You should also save a lot (at least 15 percent) and stay out of debt, but I promised to stick to one.