Thanks to bjones9942 for all these links:
News:
http://mazmessenger.com/ The Mazatlán Messenger
http://mexiconewsdaily.com/ México News Daily — the latest news from México
http://noroeste.com.mx/ Periódico Noroeste - Periódico Noroeste
http://www.debate.com.mx/seccion/mazatlan/ El Debate
http://www.mexiconewsnetwork.com/ México News Network - Online TV, Video News, Business, Gastronomy, Culture, Lifestyle
Tourist Magazines:
http://www.mmazatlan.com/ News, events, arts & leisure in Mazatlán | M! Magazine - M! Magazine
http://mazatlanlife.com/ Mazatlán Life - A daily guide to the good life in Mazatlán | MazatlánLife
https://www.mexperience.com/ Experience Mexico Living Lifestyle Travel Leisure – México Experiences
http://mazatleco.com/ Mazatleco.com - Somos la guía de Mazatlán
http://www.mexconnect.com/ Access México Connect - Current Issue - The Electronic Magazine all about México
http://www.pacificpearl.com/ Pacific Pearl
http://www.mazatlantoday.net/ Mazatlán Travel Guide: Visitors info about Mazatlán Mexico and Sinaloa State
Travel:
https://www.inm.gob.mx/fmme/publico/en/solicitud.html# Online FMM
http://www.buscaturuta.mx/mx/mazatlan Información de transporte publico de Mazatlán
http://tap.com.mx/ TAP Bus Lines
https://www.vivaaerobus.com/en/destinations/all-destinations VivaAerobus
Making the Move:
https://yucalandia.com/ Yucalandia - not just about the Yucatan, good info on immigration/pets/...
https://cobblestonediaries.blogspot.mx/ The Cobblestone Diaries (From San Miguel de Allende)
https://servicios.mazatlan.gob.mx/predial/ Pay Mazatlán Property Taxes
http://www.cfe.gob.mx/paginas/Home.aspx CFE Home
http://jumapam.gob.mx/ Jumapam | Junta Municipal de Agua Potable y Alcantarillado de Mazatlán
http://www.countdowntomexico.com/mazlinks/ Countdown to México (lives in San Antonio Tlayacapan, Jalisco after 11 years in Mazatlán)
http://www.agendamazatlan.com/ AgendaMazatlán
http://www.oem.com.mx/elsoldemazatlan/ El Sol de Mazatlán
https://mazatlan.craigslist.org/ craigslist: Mazatlán jobs, apartments, personals, for sale, services, community, and events
http://www.imglobal.com/en/travel-insurance-quotes/international-medical-insurance.aspx Medical Insurance
http://tvpacifico.mx/portal/ Inicio | Televisoras Grupo Pacífico
http://culturamazatlan.com/en/ Instituto de Cultura, Turismo y Arte de Mazatlán
http://www.adventuresinmazatlan.com Adventures in Mazatlán
https://vidamaz.com/ ¡VidaMaz! | Expatriate Family Life in Mazatlán México
https://mazsatellite.com/ Home - Maz Satellite LLC
http://www.soniadiaz.mx/ Sonia Diaz - great general info
https://www.vivanuncios.com.mx/s-mazatlan/v1l11875p1 Encuentra lo que buscas en Mazatlán con Vivanuncios
Facebook Groups/Pages:
https://www.facebook.com/M-Magazine-Mazatlan-113675291997584/?hc_ref=NEWSFEED M! Magazine Mazatlán
https://www.facebook.com/groups/742743362510834/ Mazatlán Fire & Brimstone Association
https://www.facebook.com/groups/expatslivinginmexico/ Expats Living in México
https://www.facebook.com/groups/movingtomexico/ Moving to México
https://www.facebook.com/groups/2010652582596130/ Mazatlán Travel Club
https://www.facebook.com/adventuresinmazatlan Adventures in Mazatlán Facebook page
https://www.facebook.com/groups/424905674270403/ Find It Here Mazatlán!
https://www.facebook.com/groups/171622613283141/ Wuzhappnin in Mazatlán
https://www.facebook.com/groups/MazatlanDining/ Mazatlán Dining
https://www.facebook.com/groups/1733005903688025/ Mazatlán and area discussion page
https://www.facebook.com/groups/CASABAZARMAZATLAN/ Ventas Bazar Mazatán
https://www.facebook.com/places/Things-to-do-in-Mazatlan-Sinaloa/112058592152931/ Things to do in Mazatlán
https://www.facebook.com/gomazatlannow/?fref=ts Go Mazatlán Now
https://www.facebook.com/pulmoniataxi/ Pulmonias Mazatlán
https://www.facebook.com/Sinaloaenlinea/?fref=ts Sinaloa en Linea
https://www.facebook.com/SecturDeSinaloa/ Secretaria de Tourismo Sinaloa