Hi everyone; I'm new so please go easy. I have 2 CCENT/CCNA books ICND1 & ICND2, that I purchased in 2009. I am working towards my CCENT, wondering if these books are still useful for that purpose. Funds are tight so I'm trying make do with what I have. Worried about CLI changes with the new IOS with Nexus. Any thoughts/tips are appreciated. Thanks in advance!