When deciding on your niche, you have to actually start a blog or a website that's going to be your online hub. This is where your anchor content is going to live. Everything else will link to here. All the ads you run and traffic you drive through social media or SEO or anything else will all come here. You need a custom domain and a professional looking site if you want anyone to take you seriously.
However, some of the world's top-earning blogs gross millions of dollars per month on autopilot. It's a great source of passive income and if you know what you're doing, you could earn a substantial living from it. You don't need millions of visitors per month to rake in the cash, but you do need to connect with your audience and have clarity in your voice.
Internet marketing is the job of creating a convincing message that attracts customers to an online product. Successful online marketers come from a variety of backgrounds, including business, graphic design, writing and IT fields. You can find resources on the web to learn more about Internet marketing. Try taking on a small initial project and add the results to your personal work portfolio. Use the portfolio to interview for jobs in the field, or to find work as a freelancer.