I wholeheartedly agree with 9 out of these 10 financial tips.
The one I disagree with is #3, about paying extra against your mortgage principal. That's almost always a bad idea, since it (counterintuitively) ends up costing you more money and increases your risk of losing your home, as I show here:
Instead, I'd suggest this underrated and counterintuitive financial tip: If you need a car (and aren't an amateur or professional auto mechanic), buy your cars new and drive them for a long time.
While endless digital ink has been spilled touting that buying used saves you from the huge depreciation hit of the first year or two of a car's life, the data prove this ends up costing you at least as much if not more in other ownership costs, as I show here: