It's a fairly easy read. He lists 12 things like:
1 Save instead of spend.
2 Start early A dollar invested in your mid-20s is likely to be worth nearly five times as much as a dollar invested in your mid-40s.
3 Rely on stocks, not bonds
4 Own many stocks, not just a few
5 Cut expenses
6 Index funds
7 Small-company stocks
8 Value stocks
9 Buy and hold
10 The simple math of dollar-cost averaging
11 Manage taxes
12 Target date funds