The IRS website Tax Information for Businesses contains a wealth of information for the small business owner.
Another good source of information for the small business owner is the Internal Revenue Bulletin, which is published weekly and available on the IRS website.
The Internal Revenue Bulletin is the authoritative instrument of the Commissioner of Internal Revenue for announcing official rulings and procedures of the Internal Revenue Service and for publishing Treasury Decisions, Executive Orders, Tax Conventions, legislation, court decisions, and other items of general interest. It is published weekly and may be obtained from the Superintendent of Documents on a subscription basis. Bulletin contents are compiled semiannually into Cumulative Bulletins, which are sold on a single-copy basis.
New business owners have tax-related things to do before launching their companies. For information review this website, https://www.irs.gov/newsroom/four-things-to-know-about-taxes-and-starting-a-business
Subscribe and get the IRS Newswire via e-mail from the IRS National Media Relations Office in Washington, DC. Topics cover the entire range of tax administration, including tax law changes, filing season updates, statistics and more and are usually issued, on average, two to three times a week.