WAN textbooks and references

[Kahuna1980]

Can any of you pros direct me to a set of books or references that you have read or used that has help you understand the WAN, I'm a student and taking courses for CCNA

[Collin Clark]

http://www.amazon.com/Troubleshooting-Remote-Networks-Professional-Development/dp/1587050765/ref=sr_1_3?ie=UTF8&qid=1232986077&sr=8-3

http://www.amazon.com/Troubleshooting-Routing-Protocols-Professional-Development/dp/1587050196/ref=sr_1_1?ie=UTF8&s=books&qid=1232986152&sr=1-1

Don't worry that they are CCIE level books, they cover the basics well.

Hope that helps.

[Kahuna1980]

Thanks alot. If you have any more suggest please feel free to email me.