IT eBooks on Sale — 40% Off or More
78 books
Prompt Engineering for Developers
Designing Precise, Testable, and Production-Ready AI Instructions for Modern Software Engineering
276 views
€14.90 €8.90
Secure Coding in the Age of AI
Protecting Applications, Data, and Development Workflows in AI-Assisted Software Engineering
221 views
€14.90 €8.90
AI-Assisted Coding Foundations
A Practical Developer’s Guide to Writing Better, Faster, and Smarter Code with AI Pair Programming
300 views
€15.90 €8.90
Debugging & Refactoring with AI
Systematic Problem Solving, Code Modernization, and Technical Debt Reduction Using AI-Assisted Engineering
222 views
€16.90 €9.90
Python Barcodes: A Comprehensive Guide to Understanding, Generating, and Decoding
267 views
€18.90 €9.90
Python Programming: A Comprehensive Beginner's Guide with 200 Practice Exercises
278 views
€19.90 €9.90
250 Linux Exercises
Practical Challenges for Command Line Mastery and System Administration
1,250 views
€29.00 €9.90
Debian Security and Hardening
Secure your Debian systems with firewalls, permissions, and updates
281 views
€16.90 €9.90
Regex Mastery for System Administrators
Practical Pattern Matching for Logs, Configs, and Automation Workflows
239 views
€21.90 €10.90
Fedora Fundamentals
Modern Linux Desktop and Server Administration with Fedora
234 views
€19.90 €10.90
Linux High Availability & Clustering
Designing, Deploying, and Managing Fault-Tolerant Linux Infrastructure
260 views
€20.90 €10.90
Linux Cron Jobs & Task Scheduling Fundamentals
Automating System Tasks, Maintenance, and Workflows on Linux
259 views
€18.90 €10.90
JavaScript ES6+ Modern Features
Mastering Modern JavaScript Syntax, Patterns, and Best Practices
220 views
€19.90 €10.90
Linux+ CompTIA Certification Guide
Comprehensive Exam Preparation for the CompTIA Linux+ Certification
256 views
€19.90 €10.90
Prompt Engineering Mastery
Designing Reliable, High-Quality Prompts for AI Systems
296 views
€19.90 €10.99
Exchange Online Management with PowerShell
Automating, Securing, and Optimizing Microsoft 365 Email Environments
312 views
€22.90 €11.90
SOC Analyst Fundamentals
Monitoring, Detecting, and Responding to Security Threats in Modern Environments
267 views
€24.90 €11.90
Azure Virtual Machines & Networking Fundamentals
Deploying, Securing, and Managing Virtual Infrastructure in Microsoft Azure
216 views
€19.90 €11.90
Premium IT & Linux eBooks for Professionals
Welcome to the Dargslan eBook library — a curated collection of 78+ 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.