I’ve learned whole bunch of stuff online.
Technology: Linux, Apache, IIS, MySQL, PHP, JavaScript, TypeScript, Angular, HTML, CSS, C#, Selenium, and a lot of the things required to administer and deploy them. Learning this has helped me get my current job and move up the ranks their.
Automotive Repair: I learned how to clean, lubricate, and adjust the brakes on my car and how to change the transmission fluid by finding videos and forum posts for my particular car. That saves a lot of money compared to having the dealer or mechanic do it for you. If you have the right tools, it’s dead simple.
Personal Finance: Pretty much everything I know about loans, credit cards, and investing I have learned from blogs and this forum. This has probably been the most fruitful thing I have learned from the web. If I hadn’t gotten curious about where all my money was going and how to keep more of it, I’d probably still be sleepwalking through life, letting thousands of dollars slip through my fingers.