All Books
275 books
Mastering Ubuntu: From Basics to Advanced Administration
A Complete Hands-On Guide to Installation, Command Line, System Administration, Security, and Automation
290 views
€12.90 €7.90
pfSense Fundamentals
Building, Securing, and Managing Firewalls, VPNs, and Networks with pfSense
275 views
€16.90
C Programming Fundamentals
A Complete Beginner's Guide to the C Programming Language
242 views
€17.90
Ollama Fundamentals
Running and Managing Local AI Models with Ollama on Linux, Windows, and macOS
199 views
€16.90
pfSense CE 2.8 Study Notes
The Complete, Practical Guide to the Free, Open-Source Firewall — Install, Configure, Secure
186 views
€12.90
CrowdSec Fundamentals
Modern Threat Detection, Collaborative Security, and Automated Protection for Linux Servers
184 views
€15.95
Cloud Networking Fundamentals
Virtual Private Clouds, Subnets, and Secure Connectivity
182 views
€13.90
Linux System Auditing with Auditd and Systemd Journal
A Practical Guide to Monitoring, Logging, and Securing Your Linux Systems
171 views
€15.90
Broken Linux
A Practical Guide to Diagnosing, Repairing, and Recovering Linux Systems
143 views
€29.90
Hosting Fundamentals
A Complete Guide to Building, Securing, and Managing Modern Hosting Infrastructure
138 views
€25.90
LDAP Fundamentals
A Complete Guide to Lightweight Directory Access Protocol and Directory Services
127 views
€18.90
AI API Security
Securing AI APIs, LLM Services, AI Agents, and Enterprise AI Platforms
121 views
€23.90
Windows Server 2025
Complete Installation, Administration, Security, Virtualization, and Enterprise Infrastructure Guide
113 views
€24.90 €22.90
Premium IT & Linux eBooks for Professionals
Welcome to the Dargslan eBook library — a curated collection of 275+ practical digital books covering Linux administration, DevOps, cloud infrastructure, cybersecurity, Python programming, Windows Server, networking, and modern software engineering. Every title is hand-picked, reviewed for accuracy, and written by working engineers who use these tools every day in production environments. Whether you are preparing for a Red Hat, AWS, or Microsoft certification, hardening a Linux server, building a CI/CD pipeline, or learning a new scripting language, our catalog gives you battle-tested guidance you can apply immediately.
What makes our IT eBook collection different
Most online learning platforms lock content behind expensive monthly subscriptions or push outdated PDFs that were last updated years ago. We do the opposite: buy once, own forever, with free lifetime updates whenever a major edition is released. Every eBook ships in modern PDF and EPUB formats, is DRM-free, and works on any device — Linux, macOS, Windows, iPad, Kindle, or your favorite e-reader. Average price across the catalog is around €14, and we regularly offer curated bundles that drop the per-book price even lower.
Topics we cover in depth
- Linux & Unix: Bash scripting, systemd, package management, kernel internals, performance tuning, and distribution-specific guides for Ubuntu, Debian, RHEL, AlmaLinux, Arch, and Fedora.
- DevOps & SRE: Docker, Kubernetes, Terraform, Ansible, GitOps, CI/CD with GitHub Actions and GitLab, observability with Prometheus and Grafana, and incident response playbooks.
- Cloud Infrastructure: AWS, Azure, and Google Cloud architecture patterns, cost optimization, IAM hardening, serverless design, and multi-cloud strategies.
- Cybersecurity: Penetration testing, OSSEC, Wazuh, SELinux, AppArmor, network forensics, OWASP Top 10, secure coding, and Linux server hardening.
- Python & Automation: CLI tools, async programming, FastAPI, data engineering, infrastructure-as-code with Python, and AI/LLM integration.
- Windows Server & PowerShell: Active Directory, Group Policy, PowerShell automation modules, and hybrid Windows/Linux administration.
Why thousands of engineers choose Dargslan
Our readers include sysadmins, DevOps engineers, security analysts, software developers, IT students, and university lecturers across more than 60 countries. They choose Dargslan because every book is practical first, theoretical second — packed with real terminal sessions, working configuration files, copy-pasteable code, and architecture diagrams that reflect how systems actually run in production. We also offer free sample chapters on every book page so you can verify the quality before purchasing, plus a transparent 14-day refund policy if a book doesn't meet your expectations.
Instant access, secure checkout
Checkout takes under 30 seconds with Stripe or PayPal, and your download links are emailed instantly along with access from your account dashboard. All transactions use 256-bit SSL encryption, and we never store payment details on our servers. Need an invoice for your company or VAT reverse-charge inside the EU? Every order automatically generates a compliant PDF invoice with your company details.
Browse the catalog above, filter by category or price, or explore our bundle deals, best-book lists, free eBooks, and technical blog for in-depth articles, cheat sheets, and tutorials. New titles are added every month — subscribe to our newsletter to get a 20% launch discount on every new release.