The IRS has a comprehensive website that answers many questions and provides necessary forms and instructions. Link to the IRS website WWW.IRS.GOV.
For Tax Professionals
Jack Townsend offers this blog on Federal Tax Crimes principally for tax professionals and tax students.
Procedurally Taxing considers developments in issues relating to tax procedure and tax administration that are of interest to practitioners and academics.
Provided by the exemplary California based tax firm HOCHMAN, SALKIN, RETTIG, TOSCHER & PEREZ, P.C.
Paul Caron, Pepperdine University School of Law.
Perhaps the most entertaining of the Tax Bloggers!
For recent opinions, forms calendars, Tax Court Rules, New and noteworthy, and access to the Tax Court online filing system.