We have written and will continue to write posts related to networking and how to do most things that might come up regularly in the life of a system administrator but we have to admit that although we try to be as detailed and to the point as possible, each post handles mainly one activity and some of you may want to know more and even go as far as doing this professionally.
Unfortunately our time and resources are limited so we can not provide you a proper course on network administration, so as a way of helping you to learn in a more structured manner, to help you better understand what is going on and what you need to know to become a successful system administrator we have found some very affordable courses over here that will take you from the CISCO CCNA level all the way to CISCO CCIE level and help you eventually earn an official internationally recognized certificate.
These courses are not created by us, but we think they cover all the information required for anyone who would like to take the professional path and they can help you drastically improve your understanding of network administration. We will continue posting useful content right here as we go.
So if you feel you want to know more than what we have posted thus far and eventually want to get an official certificate head over GNS3Vault and start learning.