US Bonds (best websites at the top of the page)

Reuters - Bond News Website - this is Reuter's Bond news website. It has a lot of information that would be of interest to bond investors. There is a concentration on the macro economic news that affects bonds. 

Bloomberg - Bond News - this is Bloomberg's Bond News Portal. It is a good resource to find out up to date news on Bonds from around the world. There is a concentration on news for bond issued by countries.

Investing in Bonds -this is the website created by  The Securities Industry and Financial Markets Association to provide information about bonds. There are news articles, current pricing of bonds, and information about bonds on this website. This website targets traders and investors but it also has information help the beginning investor understand how to use bonds in their portfolio. There are a series of articles that introduce people to investing in bonds. 

Bonds Online - this is a website that has news and articles about bonds and events affecting bonds. This website is targeted at traders and investors. 

Savings Bond Advisor - this is a website about bonds that is targeted at the every day investor. It has current yields on various series of US bonds. There are explanations of the various bond series.