I began my basic networking studies reading the standard CCNA books, practicing via GNS3, and memorizing subnetting. There was only so much I could do as I moved up from CCNA to CCNP and preparing for CCIE. Like most, I failed the first written exam, and passed the second. Going through the INE written videos, working on the INE labs, and watching the lab videos gave so much insight into the technology that I was able to grasp it, not only conceptually, but to understand the relationship between many of the protocols and features. The INE instructors humanized much of the knowledge so that it was easier to understand instead of trying to discern the technical jargon alone and then understand how it functions. Much appreciated and much credit given to INE for helping to further me in my career.