I have missed many paychecks myself, but never missed an employee payday. Even after ten years of prompt payments every month, those bastards will cut you off after a couple of months. Rule 4 Read books and magazines. You can get any information you need at the library. And now on the web.
Bookstores are a lot of help, too.
And magazines present valuable trade information, along with precisely targeted market-specific educational material. Trade associations are filled with educational material you can usually borrow. Learn everything about your primary industry, your markets, your competition, and all the secondary and tertiary industries you hope to serve. I receive over 125 magazines a month. More than that number of catalogs.