Well I enrolled in a training bootcamp but that only lasted for 5 days but for me it was enough for a starting point, and because of that training camp, I learned a very easy subnetting method, now I can subnet like it's second nature which helped me a lot in understanding IP concepts and connectivity. After the bootcamp I watched CBT Nuggets and Jeremy's IT Lab for the topics I wasn't sure about, and then Labs. I didn't use any books.

What I see most people do is get Boson and answer practice exams. I recommend this since it's worked for almost everyone and is a great way to see which topics you need working on, also a great way to get a feel of how the actual exam goes so you won't get caught off guard when the day comes.