Set up a merchant account. Service businesses in the past had to generally rely on cash or check—setting up an entire credit card processing system was a thankless, expensive task at best. Using a service such as PayPal makes it possible to accept virtually any form of credit or debit card for your services, and includes dispute resolution should the need arise (and it will arise).
Just about any home business with a website can profit by placing affiliate ads on their sites, but there are also many who pursue affiliate marketing as a full-time Internet business in and of itself. The most successful affiliate marketers either use a funnel system or a blog (or both) to promote their affiliate products. Further, they also have an email list.
A work from home job can be any position that does not require you to be in an office. There a wide range of work from home jobs. Some companies offer opportunities for employees in traditional roles to work remotely for all or some of their workweek. These jobs often use technology for meetings, assignments, and collaboration. This practice is called telecommuting. Other work from home opportunities may include jobs such as customer service representatives for which companies will hire remote workers, or part-time virtual assistants to manage work which does not require a physical presence in the office.