Through the IRS Small Business & Self-Employed Tax Center you can search by categories: Preparing Your Taxes, Filing/Paying Taxes, Stages of Owning a Business. You will also find general topics that include: A-Z Index for Businesses, Sharing Economy and Tax Reform that affect Businesses.
There is a line for Online Learning where business owners can access the Small Business Taxes: The Virtual Workshop. This workshop will give business owners an overview of their tax responsibilities and covers topics like: Employer Identification Number (EIN), Business Structures, Recordkeeping, Hiring Employees and more.