This seems particularly useful, from a reader:

Jonah,
About two years ago, I did my senior thesis on the conservative approach to Vietnam. Instead of going to mainstream sources, it almost seemed that I had to relearn everything about Vietnam from the ground (war) up. There are a few good resources that, if used properly, and if the parent has a good background knowledge of the war from a conservative perspective, could be used to teach kids effectively.
For the parent, I would suggest both Admiral Jeremiah Denton’s account of life in the Hanoi Hilton, Norman Podhoretz’s excellent 1982 book Why We Were in Vietnam (completely conservative perspective, as you well know). Both of these would familiarize a parent with the conservative interpretation of life in Vietnam and the reasons for going to war, which are the main contentions of liberals. Most often, in my research, I found that the spin originated from an attempt to whitewash Kennedy’s involvement in Vietnam, and to play up the misdeeds of the troops, and the moral superiority of the anti-war crowd. If either of these is tackled with facts, then the argument collapses. A good familiarity with Nixonian foreign policy concerning Vietnamization, and a good solid understanding of the Tet Offensive (what many would consider the turning point TOWARD America in the war) would be, at least, a place to start.
I would start with the Eyewitness Books Vietnam War: they have a kid-level run-down of the events, and they’d form enough of a basis for knowledge that a parent could create lesson plans based on the way that the war is broken down in the book. From there, the old Time-Life books that they used to sell on television (while a little liberal), have really nice photos and maps. Most bookstores will have photo anthologies of the war on their clearance racks, too.
As much as it pains me to say it, PBS had an excellent documentary series a few years ago that, while it has a decidedly liberal tilt, was incredibly well done, and comprehensive. It was called Vietnam: a Television History, and it has hours and hours of video that spans from the time the British and French first situated themselves in Vietnam until the last days. It has one particular episode critiquing the medias role in the anti-war movement that was particularly useful. For these, PBS has an online resource called Battlefield: Vietnam that has some good outside resources.