I wouldn’t say you can’t be successful with a free domain, for example barenakedscam.siterubix.com, but having a personal domain will definitely help with branding and makes it more credible, plus there’s no restriction on the design if its your own domain. Free domains have certain restrictions in terms of the customization of the look and feel of the website.
If you are a creative, digital professional who thrives on forming the layout, visual theme, font set and color palette of a website, freelance web design may be a good path for you. If you have little to no experience in this field, you can learn the basics of web design and master the tools you'll need for success, like Adobe XD, Chrome DevTools and text editor software.
You know this one already. You include links to products you are promoting as an affiliate and every time somebody buys the product, you get a commission. With a blog, you can integrate advertising with content to make it even more likely you’ll get the sale. For example, you could do a product review—which is useful content—and then include a link to buy the product under an affiliate link.
If you add up all the services you get, the premium membership is a steal. For example, you’ll notice they include unlimited keyword research with a membership. Other paid keyword research tools sell for $49 or more just by themselves. Add in website hosting, and there’s another $10 / mo. Add on the website security package, and there’s another $10 per month (I’ve paid as much as $29 / mo just for website security). Just based on those things alone, Wealthy Affiliate is a great deal with all of the resources and tools you need in one convenient place. Not to mention all of the training, tutorials, and support that is included with the membership.