Her are some reads and resources which I came across that I found very useful.

General

• • Critical Security Controls (SANS Poster)

Cyber Threat Intelligence

• • Psychology of Intelligence Analysis
  • Diamond Model
  • Sliding Scale of Cyber Security
  • MITRE ATT&CK
  • Pyramid of Pain

Incident Response

• • IRM (Incident Response Methodologies)

Forensics

• • Windows Forensics

Threat Hunting

• • TaHiTI - Threat Hunting Methodology
  • The ThreatHunting Project

Detection

• • Alerting and Detection Strategies Framework
  • Detecting Lateral Movement through Tracking Event Logs
  • Endpoint Isolation with the Windows Firewall
  • Endpoint Detection and Response (EDR) solutions sheet
  • Securing PowerShell in the Enterprise
  • Attack Surface Analysis Cheat Sheet
  • Windows Event Forwarding

OS Hardening

• • Security Hardening Guides and Best Practices
  • The Practical Linux Hardening Guide
  • DevSec Hardening Framework Baselines

Awesome Lists - Github Repos

• • Incident Response 
  • Threat Intelligence
  • YARA
  • Threat Detection
  • Penetration Testing

Random

• • Top 20 CTI Presentations for 2019
  • IT and Information Security Cheat Sheets
  • Malware Archaeology
  • Operating Systems Market Share
  • How to Avoid Messing Up Your Security Program with ATT&CK™
  • IT and Information Security Cheat Sheets - Lenny Zeltser
  • SANS Information Security Posters
  • DFIR Cheat Sheets and Infographics