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What Our Clients Are Saying:

No Complexity Zone! has demonstrated an exceptional creative and effective teaching method in explaining complex networking and security concepts into an easy to understand method. It provides hope and confidence to networking professionals across the globe and, needless to say, it encourages us to teach others by following a similar teaching style. I want to thank Rene for his hard work and patience. I am along other professionals very GRATEFUL to you!

Syed Ali Sr. Network Engineer Apr. 15, 2016

Very Good has an amazing way simplifying complex materials without oversimplifying things. Nice drawings of the scenarios. I used their materials (and some other) to achieve CCNP level (RS) and am now using it to complement my CCIE studies. Their courses are ordered in a way that you can find answers to questions you got fast. I really recommend their materials!

Martijn Rotteveel Teacher IT Dec. 15, 2016

Career Changing

No exaggeration to say I wouldn't be where I am without the help of and Rene's guides. All these have allowed me to quickly understand concepts in the production environment and for studying towards exams also. Look forward to upcoming updates!

Rob Cain Network Engineer Jan. 28, 2016