CCNA in 30 Days

I'm a sysadmin with 14 years of experience in the military, and I'm setting a goal to get my CCNA certification by June 1st. I've started studying for the exam multiple times, but life always gets in the way and I end up walking away for 6 months or so. I have about 30 hours per week to dedicate to studying.

Every time I start studying, I feel like I don't know where to begin. I have some experience with networking, but I'm not sure what the best way to study for the CCNA exam is.

I'm hoping that some of you with similar experience can give me some advice on how to best study for the CCNA exam. Here are some of the things I'm considering: -Start with practice tests to see where I'm at. -Start with Exam cram. -Start with a video series. -Just do the "31 Days Before your CCNA Exam".

Any advice would be greatly appreciated. Thanks!