If you're in the market for accounting software, the name you'll come across most often is Intuit's Quickbooks - it's the most used accounting software in the world.
Initially designed for those business owners with little or no formal accounting training, Quickbooks was so easy to use that it's popularity shot up and quickly became the software of choice.
Learn about getting started with Quickbooks, accounting basics and adding vendors, customers, and employees. There's much more to the course as well; download a free sample and see for yourself. After you see the quality of the sample and you make the purchase, the courseware is yours. There's no annual renewal fee!
It's fully customizable as well; edit the material to suit your needs!