If you play the short-term game, which is gambling, sure. You can make great money if you get it right, but lose a lot of money if you get it wrong.
Well, yeah. If I have money I want proof that where I put it will give me money. You don't get VC unless you're already shitting out money. Banks won't give you money either until you prove you will give it back. Small-amount Equity Crowdfunding might offer some equity financing for your ventures. But doing it alone might be highly profitable to you too. Good luck.
Poor people in general are awful tenants. Not all, but most. Better to appeal to higher-end renters - costs more up front, but causes less in damage.
They just leverage existing money to make more money. Anyone can do it, but the trick is to make some money first and then nurture it. The rich win all the time because they love money and learn how to nurture it properly. Poor people generally don't.
Long-term trade strategy is this: Invest in a handful of good companies in diverse, non-related industries (insurance versus steel versus food versus entertainment), pad yourself out with an index fund that tracks the whole American economy (Vanguard has some), and then forget about your investments. Check out the companies every few months, dump any failing ones and redo the process. You don't lose unless you're stupidly buying bad companies.
I am financially stupid right now and did that, and all my investments are positive-growth for instance. Use financial calculators and learn what financial ratios are and what they mean - like Current Ratio and ROE.
As for why a guy who could play stocks well would want to write a book, the answer is easy: Books are stocks you make essentially for free and gain direct profits off of for as long as they exist. That's why you see rich fuckers putting out books all the time - a selling book is a goldmine that gives returns far faster than most stocks.
Warren Buffet has some solid, conservative strategies. Buy good companies that work in fields that will never become obsolescent (Candy, cola, steel versus computers, vidya, websites). It's good for your long-term portfolio at least.
This guy knows his shit. Stocks = Businesses. When I buy a Microsoft stock, think of it as owning a tiny version of the fully-functioning Microsoft company. That's exactly how you should think of stocks.
I'll have to research this method more closely. Sounds neat.