Hello everyone!
First time poster here...
I'm looking into the CCNA and for some advice.
I've been working in IT for about 5 years now. Started with helpdesk, and then sys admin. As a sys admin, I would have to do just basic router stuff now and then. (add a static route, change passwords, etc.) Nothing to big. However my main job was admin the servers, Windows AD, all the software, etc.
I'm now working as a IT Director at a different company. Don't be impressed by the title. I'm mostly doing sys admin stuff, and fixing anything IT around here.

I'm the only IT guy they have so I just do everything.
I would like to start working/learning more about the network side of things. Right now for anything cisco I call in a consultant to do it, unless it's basic.
OK, back to the point!
Like I said, I'm looking into the CCNA, and maybe the CCNP later.
Do you think I could just pick up some books, and use one of our old routers to pass the test?
Now I just don't want to pass, but learn. Do the books have enough in them to really grasp a working knowledge of networking?
Should I look into some of the classes that are like 4 or 5 days? (They seem overly priced to me.)
I also have a degree in Information Technology.
Thanks again for any advice you might give!