Books
I've authored and co-authored several IT certification study guides published by Wiley/Sybex and Manning Publications. These books have helped tens of thousands of readers earn their certifications and advance their careers.
Amazon Web Services
AWS Certified Solutions Architect Study Guide: Associate SAA-C03 Exam, 4th Edition
The authoritative guide for the AWS Solutions Architect – Associate (SAA-C03) exam. Master resilient architectures, high-performing solutions, secure application design, and cost-optimized infrastructure on AWS.
AWS Certified Cloud Practitioner Study Guide: CLF-C01 Exam
A complete guide to the AWS Certified Cloud Practitioner exam, covering core AWS services, cloud concepts, pricing models, billing, and security fundamentals. Ideal for those new to AWS cloud.
AWS Certified Solutions Architect Study Guide: Associate SAA-C01 Exam, 2nd Edition
Earlier edition of the Solutions Architect guide, covering multi-tier architectures, loose coupling and stateless systems, AWS security features, and designing large-scale distributed systems.
Networking
CCNP Enterprise Certification Study Guide: Implementing and Operating Cisco Enterprise Network Core Technologies (350-401 ENCOR)
Complete preparation for the Cisco CCNP Enterprise ENCOR 350-401 exam. Covers network architecture, virtualization, infrastructure, network assurance, security, and automation for enterprise environments.
Learn Cisco Network Administration in a Month of Lunches
A hands-on guide to Cisco router and switch administration for beginners. Work through 22 bite-sized lessons covering networking fundamentals, routing, switching, VLANs, and security — even if you've never touched a Cisco device.