diff --git a/01-Basics-Threat-Modeling.md b/01-Basics-Threat-Modeling.md
new file mode 100644
index 0000000..5d0723d
--- /dev/null
+++ b/01-Basics-Threat-Modeling.md
@@ -0,0 +1,16 @@
+# Basics
+
+* Configure system and software updates to automatically download and install. See [Keep your Mac up to date](https://support.apple.com/guide/mac-help/keep-your-mac-up-to-date-mchlpx1065) or use `softwareupdate` to configure options.
+* Encrypt data at rest with [FileVault](https://support.apple.com/guide/mac-help/protect-data-on-your-mac-with-filevault-mh11785) volume encryption. Use a [password manager](https://support.apple.com/105115) to guard and manage credentials.
+* Create scheduled [backups](https://support.apple.com/104984) of important data. Practice [recovery](https://support.apple.com/102551) in the event of a compromise.
+* Avoid third party software; if necessary, only install from official sources indicated by trusted developers.
+
+# Threat modeling
+
+# Hardware selection
+
+# Installation
+
+## Activation
+
+## Apple account
diff --git a/02-Apple-Security-Features.md b/02-Apple-Security-Features.md
new file mode 100644
index 0000000..52deb86
--- /dev/null
+++ b/02-Apple-Security-Features.md
@@ -0,0 +1,13 @@
+# First boot
+
+# Admin accounts
+
+# Firmware
+
+# FileVault
+
+# System integrity
+
+# Lockdown Mode
+
+# Siri
diff --git a/03-Network-Internet.md b/03-Network-Internet.md
new file mode 100644
index 0000000..0f1581a
--- /dev/null
+++ b/03-Network-Internet.md
@@ -0,0 +1,33 @@
+# Wireless
+
+# Firewall
+
+## Application
+
+## Kernel
+
+# Services
+
+# DNS
+
+## Profiles
+
+## Dnsmasq
+
+## DNSCrypt
+
+# Browser
+
+## Firefox
+
+## Chrome
+
+## Safari
+
+## Other
+
+## Privoxy
+
+# VPN/Tor
+
+# SSH
diff --git a/04-Systems-Applications.md b/04-Systems-Applications.md
new file mode 100644
index 0000000..8072285
--- /dev/null
+++ b/04-Systems-Applications.md
@@ -0,0 +1,23 @@
+# GnuPG
+
+# Messengers
+
+## Signal
+
+## iMessage
+
+## XMPP
+
+# Credentials
+
+# Malware
+
+## Sandbox
+
+## Hardened runtime
+
+## Gatekeeper
+
+## Antivirus
+
+# Homebrew
diff --git a/05-Advanced-Tools-Resources.md b/05-Advanced-Tools-Resources.md
new file mode 100644
index 0000000..c0bf825
--- /dev/null
+++ b/05-Advanced-Tools-Resources.md
@@ -0,0 +1,13 @@
+# Metadata artifacts
+
+# Physical access
+
+# System monitoring
+
+# PKI
+
+# Miscellaneous
+
+# Software
+
+# Resources