Inside your home folder is a Library folder—commonly written in Unix syntax as ~/Library, which means “a folder named Library at the root level of your home folder.” This folder is accessible only to you, and it’s used to store your personal settings, application-support files, and, in some cases, data.
The files and folders in ~/Library are generally meant to be left alone, but if you’ve been using OS X for a while, chances are you’ve delved inside. Perhaps you wanted to tweak something using a tip from Macworld, Mac OS X Hints, or elsewhere on the Web. Or maybe a developer asked you to delete a preference file, or grab a log file, while troubleshooting a program. Whatever the case may have been, up until Lion (OS X 10.7), you simply opened your Home folder to access the Library folder.
QuickBooks Online Self-Employed is a thinned-down version of QuickBooks Online with a very specific focus: Sole proprietors and small business owners who mix business and personal accounts, who pay quarterly taxes, and who need to do quick triage on business and personal income and expenses. QuickBooks Online Self-Employed performs its magic with the combination of a Web app and an iOS app and makes it easy to quickly separate your business and personal expenses.
QuickBooks Online Self-Employed is small business focused, which is to say that it’s aimed at business owners who are sole proprietors or LLC owners without partners, and who write off business expenses using a Schedule C when filing their personal taxes. The assumption on Intuit’s part is that the people who own these types of businesses often have a commingling of business and personal credit card and bank accounts and that it is often difficult using traditional accounting applications to quickly and easily separate business expenses from personal expenses.