Mechanical Turk: Amazon's Mechanical Turk is a resource for doing human-intelligence tasks, or as the site commonly refers to them, HITs. You get paid a very small fee for any given HIT and you'll need a good deal of volume to make a substantial amount of money. But it is a resource you can use in your spare time to generate a small income online.
Perhaps you’re raising kids and you’re committed to not using daycare. Maybe you’re a little older and can’t commit to a full-time job. Or you might be injured or disabled, making it difficult for you to leave your home each day. Whatever your reason is, if you’re stuck at home most of the day, you’ve probably thought about the income you could be making by taking a work-from-home job or running your own business.
Join a startup accelerator: Another great option is to apply to a startup accelerator like Y Combinator, 500 startups, or TechStars, where a group of investors will help coach you, connect you with potential partners, and provide startup cash in return for a small stake in your company. The competition is tough to get into these, so don’t rely on them as your only path forward.
Next Day Payment: When you sell on Decluttr, you receive payment within 24 hours after the sale completes and the item arrives at the new owner’s address. That’s substantially faster than many online consignment platforms, which tend to have more flexible payment terms. And it’s much more predictable than auction sites or venues for third party sellers (including Amazon), which typically allow buyers and sellers to work out their own payment arrangements.
Once you have that problem or need nailed, the next step is to validate that idea and make sure you’ve actually got customers who will pay for it. This means building a minimum viable product, getting objective feedback from real customers, incorporating updates, testing the market for demand, and getting pricing feedback to ensure there’s enough of a margin between your costs and what consumers are willing to pay.
Accommodate Multiple Forms of Payment: Many deal-seekers carry cash, but you want to accommodate every potential buyer. So, in the days leading up to the event, consider purchasing a point-of-sale system that can accept credit cards. Square is a popular and relatively cost-effective option: it doesn’t cost anything upfront and bundles credit card processing fees into its own per-transaction fees, resulting in a net expense of 2.75% for most transactions (net of $97.25 for every $100 charged). This is a small price to pay to capture the ever-growing cashless consumer demographic. On the day before the sale, visit the bank and grab $100 in small bills and coin rolls to ensure you’ll have enough change for buyers who do prefer cash.
Don't sacrifice morals for a quick buck — At the outset, you'll want to do all sorts of things to make money online, but don't sacrifice your morals for a quick buck. Not only will you put people off, but you'll lose Google's trust. You also shouldn't concern yourself with things like Adsense or other ads on a blog before you have around 100,000 visitors per day. Yes, per day.