IBM Z 
RACF Access Levels and Their Meaning
This tutorial goes over the differences between the RACF access levels
IBM Z 
Managing ACLs within Unix System Services
This tutorial shows how to check and set ACLs for USS objects
IBM Z 
RACF Permit-to-Resource access checks
This tutorial shows how to check access of a General Resource profile using IBM zSecure or RACF Commands
IBM Z
RACF User Scope/Permit Checks
This tutorial shows how to check the scope and/or permits of a User profile using IBM using zSecure
IBM Z
RACF User-to-Group access checks
This tutorial shows how to check access of a Group or User profile using IBM zSecure or RACF Commands
IBM Z
RACF Permit-to-Dataset access checks
This tutorial shows how to check access of a Dataset profile using IBM zSecure or RACF Commands
IBM Z 
Change your zSecure 'Confirm' Settings
This tutorial covers general settings IBM zSecure
IBM Z 
Hiding Menu Items in IBM zSecure
This tutorial covers every step of hiding menu items in IBM zSecure
IBM Z 
Setting up VS Code in a Mainframe Environment
This article covers what it actually takes to set up VS Code in a mainframe environment.