Structured Data
XML
A flexible, human-readable format for storing and transporting structured data.
Coming Soon—
The library
A plain approach to the key concepts and foundations that drive the tech industry today, all explained clearly and accessibly.
Focused introductions to the essential building blocks used across systems, software, and the web.
Regular Expressions
Defines patterns used to identify, extract, or validate specific character sequences within text.
Read More↗Docker Containers
Builds, packages, and runs applications in lightweight, portable containers.
Read More↗Filesystem Metadata
Stores file metadata such as ownership, permissions, size, and disk block locations.
Read More↗Structured Data
A flexible, human-readable format for storing and transporting structured data.
Coming Soon—Web Requests
The request methods used to retrieve, create, update, and remove web resources.
Coming Soon—Data Protection
How information is represented for compatibility and protected for confidentiality.
Coming Soon—Broader systems where identity, infrastructure, telemetry, and security controls work together.
Directory Services
A clear map of Active Directory: forests, domains, identities, authentication, policy, permissions, and hardening.
Read More↗Security Monitoring
How security platforms collect, correlate, and investigate events across an environment.
Coming Soon—A space to discover & learn
This page is a place where anyone can come to discover and learn the basics of the most relevant concepts in the tech industry — completely free of cost. Whether you’re just starting out or brushing up on fundamentals, the goal is to offer clear, accessible, and well-organized knowledge to empower curious minds and future innovators alike.
Read about Plain Library