Recommended thyroid books
First choice:

• Nikiforov, Diagnostic Pathology of the Thyroid 2e (2012)
• Wenig, Atlas of Head-Neck Pathology 3e (2015)
• WHO Blue Book Endocrine (2004)
• Rosai, AFIP Tumors of the Thyroid and Parathyroid (2015)

Chapters in general pathology books:

• Fletcher, Diagnostic Histopathology of Tumors 4e (2013)
• Rosai, Surgical Pathology 10e (2011)
• Sternberg, Diagnostic Surgical Pathology 6e (2015)

Endocrine/Head-Neck volumes:

• Nose, Endocrine by Amirsys (2012)
• Asa, Endo Pathology (2016)
• Barnes, Surgical Pathology of the Head and Neck 3e (2008)
• Thompson, Head-Neck by Amirsys 2e (2016)

FNA:

• The Bethesda System (2010)
• Yang, Thyroid FNA (2013)
• Ali, Atlas of Thyroid Cytopathology (2013)
• Kini, Thyroid Cytopathology (2015)

Related:

• Mills, Histology for Pathologists 4e (2012),
• Dabbs, Diagnostic IHC 4e (2013)

Clinical:

• Werner & Ingbar's The Thyroid 10e (2012)
• Wartofsky, Thyroid Cancer 3e (2016)

Professional societies
Pathology:

• Endocrine Pathology Society - Affiliated Journal: Endocrine Pathology
• UK Endocrine Pathology Society

Clinical:

• American Thyroid Association - Affiliated Journal: Thyroid
• Endocrine Society - Affiliated Journal: Journal of Clinical Endocrinology & Metabolism
• Society for Endocrinology - Affiliated Journal: Endocrine-Related Cancer
• European Society of Endocrinology - Affiliated Journal: European Journal of Endocrinology

Media
Virtual slides (main):

• Rosai Collection
• Virtual Pathology at the University of Leeds
• University of Michigan Virtual Slide Box
• Eurocytology

Virtual slides (more):

• Uni Basel vSlides
• Aachen University
• Iowa Virtual Slidebox (requires plugin)
• WebMicroscope (requires plugin)
• International Academy of Cytology

Images:

• Uni Basel PathoPic
• WebPathology
• WebPath by Uni Utah
• PEIR Library by Uni Alabama
• Human Protein Atlas
• The Bethesda System Atlas

YouTube channels:

• Medical School Pathology by John Minarcik, MD
• ThyCa educational lectures
• Thyroid FNA by Teresa Alasio, MD

Guidelines
Pathology:

• CAP Thyroid Cancer Protocol (2016)
• CAP Thyroid Biomarker Reporting (2016)

Clinical:

• 2015 ATA Guidelines for Adult Patients with Thyroid Nodules and Thyroid Cancer
• AACE/ACE/AME Guidelines for the Diagnosis and Management of Thyroid Nodules (2016)
• ATA Guidelines for Children with Thyroid Nodules and Differentiated Thyroid Cancer (2015)

Online resources

• Thyroid Disease Manager