Passed the N+ about a month ago with a decent score so this seems like the next logical step. I am halfway through the CCENT for dummies book. Then intend to read through the relevant parts of Lammles CCNA 7th edition book. Plus labbing labbing labbing on Packet Tracer and subnetting practicing, I'm down to about 60 seconds on the Cisco learning network subnetting quiz. I have read through the Dummies book around a year ago and did a fair amount of labbing. So hopefully I have plenty of time if I get my head down