Networking has hundreds of small concepts. How do you string them together? Labs. See lots in the CCNA Simulator product, and some free labs you can do on your gear and on paper at the CCENT and CCNA Skills blogs.
It's pretty simple, but very useful. Wendell poses a question. You answer, and ask clarifying questions. Wendell posts the answer and explanation. You inquire again as needed. Join in the practice and discussion!
Sure, you can read, review, do labs... but are there any tips about the exam that you should know? Any place to focus? What do people who pass really do when studying? Check Wendell's posts that fit into the Study Tools category over at the CCNA Skills blog.