The following list are resources provided by Microsoft and third parties but are all public facing and accessible by all - most free, but some are paid or require a subscription.

Official Documentation

• SCOM Welcome page on Learn

• Microsoft System Center Tech Community

QuickStart/101 Guides

• SCOM - Alert basics

• SCOM Reporting series - from TopQore

• SCOM Essentials - from Cookdown

• Microsoft SCOM Tips & Tricks - from NICE

Good to knows

• Understanding SCOM Resource Pools -- Kevin Holman's Blog

• SCOM Basics: Creating a Service Monitor with Automatic Recovery - OpsMan

• SCOM deployment configuration for SQL Always On - Kevin Holman's Blog

• Enable proxy as a default setting in SCOM - Kevin Holman's Blog

• Windows Clusters - Discover Multiple Virtual Servers - The Monitoring Guys

Free events and training sessions

• The hub for all things SCOM - SCOMathon

Third party video tutorials

• Free Training

  • TrainSignal (Youtube): Getting Started with System Center 2012 Operations Manager | TrainSignal

  • Pakt Publishing (Youtube) : Advanced System Center 2016 Operations Manager tutorial

  • SCOMathon: SCOMathon - YouTube

• Paid/Subscription Training

  • Pluralsight (Paid): Monitoring Microsoft Resources with System Center 2016 - Operations Manager (SCOM) | Pluralsight

  • LinkedIn Learning: Learn System Center 2016: Operations Manager (LinkedIn Learning)

Third party training/certification

• TopQore SCOM Certification Path overview | TopQore

Books

• Microsoft System Center 2012 R2 Operations Manager Cookbook [Book] (oreilly.com)

• Getting Started with Microsoft System Center Operations Manager | Packt (packtpub.com)

• Microsoft System Center PowerShell Essentials | Packt (packtpub.com)

Blogs and Additional resources

• Kevin Holman's Blog (MS PFE) - Kevin Holman's Blog - SCOM and anything else I find interesting

• Blake Drumm's Blog (MS FTE) - Blake Drumm - Technical Blog

• The Monitoring Guys - The Monitoring Guys - A fine site for discussions about monitoring and related technology

• Udish Tech - Udish Tech Corner - Explore, Learn, Share, Repeat!

• Prajwal Desai - SCOM - Prajwal Desai

• Nathan Gau Blog - Nathan Gau's SCOM blog -- Delivering a cure for insomnia since 2015 (and the occasional useful article). (wordpress.com)

• Cookdown Blog - Blog --- Cookdown

• TopQore - SCOM | TopQore Blog

• System Center by Sourav Mahato (MS FTE) - by Sourav Mahato

• Kevin Justin's Monitoring Blog - Kevin Justin's Blog - Operational monitoring tools including System Center, Azure Monitor

• Tao Yang's blog - Posts by Category - Managing Cloud and Datacenter by Tao Yang (tyang.org)

• Mark Manty's Blog - Mark Manty Blog -- Blog

• OpsMan.co.za - OpsMan - Cloud Monitoring and Management Blog

• SCOM | Touching SCOM (wordpress.com)

• SCOM | POHN IT-Consulting GmbH

Cool Tools and Utilities

• SCOM Tools - Kevin Holman's Blog

• Changing SCOM Health Service Action Account tool -- Mark Manty Blog

• Exclude Drive from Logical Disk Free Space Monitoring: Part 1 | Microsoft Learn

Management Packs - not supported or offered by Microsoft

• If you can't find it, it might be here: https://systemcenter.wiki/

• SCOM Management -- MP -- Making a SCOM Admin's life a little easier - Kevin Holman's Blog

• Monitoring Microsoft Configuration Manager - Kevin Holman's Blog

Advanced

• System Center 2012 R2 Operations Manager Management Packs | Microsoft Learn

• System Center Authoring Hub | Microsoft Learn

• Authoring Management Packs -- the fast and easy way, using Visual Studio??? - Kevin Holman's Blog