The Annos.

Ive searched many websites and only a couple provide great information. One is pbs.org, it has primary sources and other things like videos even pictures. The website also provides a timeline of the Vietnam War, even before America commited to a ground force. I will use this site to explain how the soldiers felt about the war and the timeline that followed.
http://www.pbs.org/wgbh/amex/vietnam/

The other site is called historyplace.com, it provides almost the same thing pbs.org does, but it provides a more detailed timeline. I'll use it basisly the same way I'm using pbs.org, the only difference is the timeline details.
http://www.historyplace.com/unitedstates/vietnam/index.html