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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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808 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:

Cisco CCNA Routing & Switching

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

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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.
March 7, 2025
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Sr. Network Engineer
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March 19, 2025
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Network Engineer
Ideal for Certification
NetworkLessons.com is simply the best trainer. Topics are explained in a way that makes them easy to understand. The content's quality and clear explanations make it ideal for certification or increasing your knowledge on a topic. Highly recommended!

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“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)

Rene Molenaar Posing transparant