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Complex networking topics explained in the simplest way possible…
Including Cisco CCNA, CCNP and CCIE Enterprise Infrastructure.

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809 lessons and I am constantly adding new lessons, videos and reference material. Everything is explained in the simplest way possible.

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Do you still have questions after viewing some of the lessons? We have a community forum where we help out members with answers.

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Beginner in networking or professional? We offer Cisco lessons for all levels. If you have never worked in IT before then you will enjoy the CCNA lessons while experts will love the CCIE lessons. My lessons will help you to prepare for popular certifications like:

Or any of our other topics

Subnetting
Switching
Spanning-Tree
Frame-Relay

RIP
EIGRP
OSPF
BGP

Multicast
IPv6
QoS
MPLS

Security
IP Routing
Network Services
Linux

GRE
IOS
DMVPN
PIM

NAT
ACL
VPN
IPSec

What our Members are Saying

March 15, 2026
Mohamed Ramadan
ITSM Team Lead
Plain English Networking
NetworkLessons.com provides very constructive courses. Their lessons are easy to understand, especially the labs. It really is networking in plain English, just like they always say.
November 13, 2024
Jeremy Blank
Network Engineer
Gift for Explaining
Huge shoutout to NetworkLessons.com! Before I found this site, learning networking felt confusing. They have a gift for explaining complex topics in a simple, understandable way that just clicks for me. It's clear they are not just knowledgeable, but they genuinely care about helping people learn. I'm thrilled to be a member, and I can't thank them enough for helping guide me in this journey.
March 23, 2025
Henri Stema
IT Consultant
Well-Organized Learning
NetworkLessons.com is a fantastic resource for anyone looking to deepen their networking knowledge. The lessons are well-structured, easy to follow, and packed with real-world examples that make complex topics easier to understand. If you’re serious about mastering networking, I’d definitely recommend NetworkLessons.com as a reliable and well-organized learning environment.

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Stop Struggling & Start Learning

“My name is Rene Molenaar, and I am here to help you to achieve your goals. Do you want to upgrade your skills? Want to start a career in networking? Become a CCIE in Enterprise Infrastructure? Let me help you! After teaching Cisco classroom courses for several years I decided to share my knowledge online on NetworkLessons.com.”

Rene Molenaar CCIE #41726, founder of NetworkLessons.com (and primary course author)