some people seem to be ignoring this
I currently have a very easy, well paying job which would allow me lots of time for study... AND they'll pay for tests and study materials.
I'd suggest starting out by choosing the 2 exam route to get the CCNA. Completing the first exam, ICND 1, will get you the CCENT. Completing the second exam, ICND 2, will get you the CCNA.
ICND 1 shouldn't be too difficult. ICND 2 is much more difficult if you are not adequately prepared. For study material, I suggest using the Cisco Press books and lots of router labs/sims. If you can prepare on real router/switch configurations, then that is even better.
I managed to barely pass the ICND 2 to get the CCNA recently, but after taking the test, it was abundantly clear to me the book material (not Cisco Press), some Packet Tracer usage, and online resources I used were no where close to adequately preparing me for understanding the material presented in the ICND 2 exam.
I've been considering getting the Cisco Press ICND 2 book just so I can get a more proper understanding of the concepts and technologies covered within ICND 2.