Amazon makes it fairly easy to list and sell old books, games and devices on its marketplace. You can make more than just a few bucks If you have pricey textbooks from college. Be sure the books are in good condition. You'll get negative reviews if you attempt to sell books that are falling apart or games that are scratched up. Remember, be upfront about any defects, no matter how small they might be and no matter how few people might readily notice it. 

Teaching and tutoring English as a second language is a great way to make money online, not to mention open some doors for you to travel the world if you'd like. While full ESL (English as a Second Language) accreditation is recommended, as long as you’re a native speaker and have the ability to teach, there are people in countries such as Hong Kong or the UAE who are willing to pay upwards of $25/hr for you to tutor them English via Skype. Check out Indeed, Learn4Good and Remote.co for remote english tutoring jobs or sign up on a specialized site like VerbalPlanet or Chegg Tutors.
It’s true that there’s a price to pay for wealth, but unless you’re Warren Buffett, it is not gambling — and losing — on stock picking. Impulse, naivety and emotions, particularly greed and fear, can seriously hinder your chances of being rich if you let them. The best way to protect yourself and get a step up on your financial goals is to first invest in a team of financial professionals. This means hiring a qualified and experienced financial advisor, accountant and in complex cases, an estate planner. Yes, working with pros will cost you, and you can still do some DIY investing, but their objectivity, expertise, personalized guidance and ongoing monitoring can be well worth it (and relieve you of the huge burden of figuring it all out on your own).

That being said, life in your 20s and 30s is not without its challenges; you might have student debt, a tenuous career, and dozens of unknowns that keep you from doing everything you'd like to build your wealth faster. There's no straightforward way to guarantee yourself a rich future, but these seven strategies can help you do it while you're still young.
Offer to watch children or pets. If you know anyone who has children or pets, you could easily begin a side gig as a babysitter or pet sitter. To let people know you’re interested, send out a group email describing your services, post an ad on Facebook, or tell friends and acquaintances about your availability in person or over the phone. You can also create a profile on a babysitting referral site like Care.com.
It wasn't just the money, but more so, what that money symbolized. It was his ticket to something bigger and greater. He had discovered how to arbitrage in the real estate market by flipping contracts. Today, he's one of the world's most astute house flippers, but also a brilliant industry leader. He took what he learned by arbitraging in real estate, and created an entire real estate SaaS and training business, Real Estate Worldwide, around it, which currently has over 22,000 members.
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