https://www.irs.gov/newsroom/breaking-down-your-irs-response-to-audits-by-mail-letter-566-asl-youtube-video-text-script
I GOT A LETTER FROM THE IRS
https://ttlc.intuit.com/questions/3605673-i-got-a-letter-or-notice-from-the-irs
I AM BEING AUDITED
If you purchased Audit Defense:
https://ttlc.intuit.com/questions/2924451-i-bought-max-or-audit-defense-and-now-i-m-being-audited
AUDIT SUPPORT
If you did NOT purchase Audit Defense:
https://support.turbotax.intuit.com/irs-notice/audit-support/