If you want to clear some space out in your house and have a big stack of books you’ve been holding onto for too long, you can make money selling your books and textbooks online. Stores like Half Priced Books and others will give you cents on the dollar for each of your current books while you can check what your book is worth by simply entering the ISBN number on Book Scouter.
Strictly speaking, this isn’t really an at-home business, as most of the work takes place outside the home. But for dog lovers who don’t want other people’s pets staying overnight, dog walking is a viable business idea with a low barrier to entry. Still, there are considerations including researching the state of your local dog-walking market and addressing licensing and insurance concerns.

Sign up for a reputable affiliate network: Aside from Amazon, there are dozens of large reputable affiliate networks, such as Share-A-Sale, Clickbank, and Skimlinks, that specialize in connecting you with merchants who are looking for affiliates to sell their products. They charge relatively low commission fees for the privilege of connecting you with merchants, and the merchants on these sites tend to offer much higher commission percentages or set dollar amount payouts.
"A lot of startups tend to spend money on unnecessary things," said Jean Paldan, founder and CEO of Rare Form New Media. "We worked with a startup that had two employees but spent a huge amount on office space that would fit 20 people. They also leased a professional high-end printer that was more suited for a team of 100 (it had keycards to track who was printing what and when). Spend as little as possible when you start and only on the things that are essential for the business to grow and be a success. Luxuries can come when you're established."  
Sometimes you have to get into the trenches and make it happen.  During the first two years of business at my prior company, PC Care Support, I knocked on doors, worked my own booth, and closed my own deals. I set up a table at the local college’s business school, hired five college students to work solely on commission, and knocked on people’s doors 7-8 hours per day looking for business. For those two years I didn’t receive a paycheck.  But I believed in my service, and I believed we could be successful. I was, as billionaire entrepreneur Elon Musk said, “hell bent on making it work.” The hard work eventually paid off.
"In the words of Simon Sinek, 'always start with why,'" said Glenn Gutek, CEO of Awake Consulting and Coaching. "It is good to know why you are launching your business. In this process, it may be wise to differentiate between [whether] the business serves a personal why or a marketplace why. When your why is focused on meeting a need in the marketplace, the scope of your business will always be larger than a business that is designed to serve a personal need."

Start by utilizing these strategies, which include investing in your customer service and getting personal, but realize your work will never be done. You'll constantly be competing for these customers in the marketplace, and you can never simply rest on your laurels. Keep researching the market, hiring good people and making a superior product and you'll be on your way to building the empire you always dreamed about.
First off, I’m a blogger so it seems wrong not to mention it, but more importantly, it’s a legitimate way to make money. It’s quite possibly the least straight-forward way on this list, but it’s very doable and it’s also quite possibly the funnest way on this list. I love blogging and I know hundreds of bloggers who feel the same. So let’s talk about making money blogging and what it really means.
Then once you’ve got your domain name and hosting sorted out, it’s time to pick a CMS, or Content Management System, that will let you update pages, build your blog and integrate with all the other services you need. It’s hard to go wrong with WordPress—the CMS powering close to a quarter of the internet. Keep in mind that eventually as you start growing traffic to your blog, you'll be wise to invest in a managed WordPress hosting plan from a company with great service like Kinsta, where all of the settings are custom-tailored and optimized to work particularly well with WordPress-powered websites.
Appliances and electronics home business ideas: Appliance repair, computer repair, home theater design, television repair. Almost every household has a computer these days, and people need help when those laptops go toes up. The same applies to all their other electronics and appliances. Making house calls could really put you in demand if you have the skills.
Rather than making money through subscriptions, YouTube channels are based on a traditional advertising system. Meaning the more viewers you get, the more you make. Once you’re approved for the YouTube Partner Program and can start including ads on your videos, with every 1,000 views, you will make approximately $2-$4. Which might not seem like a lot, but if you have 100 videos with 5,000 views a month each, that would be $1,000–$2,000 already. Just imagine if your videos start hitting millions of views!
Upwork: This website offers a great marketplace for selling just about any professional service. You don't need a merchant account, website of your own or anything else for that matter. All you need to do is be able to provide a high-quality service at a reasonable price. But be informed, you will have to compete with many others that are constantly bidding on open jobs. 
Starting any business has a price, so you need to determine how you're going to cover those costs. Do you have the means to fund your startup, or will you need to borrow money? If you're planning to leave your current job to focus on your business, do you have money put away to support yourself until you start making a profit? Find out how much you're going to need.
If it’s not clear yet, information and expertise are two of the most consistent and lucrative ways to make extra money online. If you don’t like talking on the phone, you can sign up to get paid to answer professional questions on JustAnswer. There are thousands of questions being asked every month from people looking for help from lawyers, doctors, mechanics, vets, and more. To apply, you’ll need to supply your professional verification, resume, and a form of identification.
Appliances and electronics home business ideas: Appliance repair, computer repair, home theater design, television repair. Almost every household has a computer these days, and people need help when those laptops go toes up. The same applies to all their other electronics and appliances. Making house calls could really put you in demand if you have the skills.
Once you’ve gathered a list, put together a template outreach email (as you’ll be doing this over and over) that’s short and clear with expectations. Tell your potential interviewee who you are, what your podcast is about, and what you’re asking of them. Do a few test interviews with friends and family to make sure everything is being recorded at the quality you want and then book your first episode.
If you're serious about making money online, start a blog. Blogging is one of the easiest and most sustainable income sources. As long as the blog is setup the right way, in the right niche, with the right content targeted at the right audience, and the offer is complementary to the content, you could make a tremendous amount of passive income from a blog.

Corrisa, thank you for adding your thoughts on Annie’s list. I wholeheartedly agree with your points to consider and would encourage anyone looking to join a network marketing-based business to do their due diligence before signing up. As I have found in my past ventures into home based businesses, the KEY to success is to treat your business as exactly that and not a hobby or trending fad.
Please note that some of the links below are affiliate links and at no additional cost to you, I will earn a commission. Know that I only recommend products, tools and learning resources I've personally used and believe are genuinely helpful, not because of the small commissions I make if you decide to purchase them. Most of all, I would never advocate for buying something that you can't afford or that you're not yet ready to implement.
18. CraigsList – Some things don’t ship very well. Other things may make you feel uncomfortable to sell to someone across the country. Anytime you’re selling a large item or something you just don’t want to ship, Craigslist is a great place to go. It’s simple to list your item (again, take good pictures!). If you don’t like the idea of putting your phone number out there, the interested individual can send you a message to your inbox without even getting your email address.
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