Now that I predominantly work from home, I like to throw CNBC or Bloomberg on the TV for background noise. However, all of the programming seems geared towards encouraging the at-home retail investor to be constantly moving their money around. And to speculate in individual stocks.
Those are stations for active investing. Back in March 2020 I was watching CNBC and Bloomberg for hours a day - to figure out what the market knew. It was useful to know the market was distracted by the oil price war started by Saudi Arabia, and didn't realize Covid-19 was far more significant until it was too late.
Who would pay for a program about passive investing? Not Vanguard, which hasn't spent on advertising in years past. I think you're stuck with reading material, rather than viewing TV stations. Although I've flipped to active investing, I invested passively for a couple decades, so I have some book recommendations.
"A Random Walk Down Wall Street", a classic that is still getting new editions.
"The Only Guide to a Winning Investment Strategy You'll Ever Need" by Larry Swedroe, who suggests a small/value tilt when indexing.
"The Little Book of Common Sense Investing", by John Bogle, who turned passive investing into a movement.
For investing, I would avoid "Rich Dad" books - the guy timed Hawaiian real estate right - doesn't make him an investor in stocks. Similarly, Dave Ramsey and Suze Orman don't understand investments. They can help with personal finance and getting people to stop making spending mistakes, but they don't have experience with investing.
The simplest advice for spotting the right book: look for historical tables showing stock market returns. All 3 of the books I recommend have them, and none of the ones I warn against do. Solid books on passive investing show decades of stock market history where their ideas proved valid.