Hmmm. . . I'm late to this thread, but I have to add my opinion that I don't think a Red Virginia is the best starting place for someone brand new to Virginias. Yes, there will be some sweetness; there will also be quite a bit of tang and, depending on the blend, nicotine strength. To me, Red Virginias are something of an acquired taste, even for a Virginia fan.
I would echo all of those who have recommended Dunhill Flake. It's a very mild Virginia that requires no special treatment or attention, other than the ability to either rub it out (my preference) or cut it up for filling a bowl. It's not going to deliver a lot of flavor or nuance, but it would be a fine introduction.
I'll also recommend Rattray's Old Gowrie, a very nice blend that was the first Virginia I actually fell in love with, and Samuel Gawith's Full Virginia Flake, which, for me, is a very mellow, soft, and rich Virginia flake. I'm particularly sensitive to nicotine, and this one has never given me any problems, despite the "full" in the name.
I'm kind of shocked that the premiere American blender of Virginias hasn't gotten much love in this thread: McClelland. I'd recommend starting with Matured Virginia No. 27. And even though they aren't pure straight Virginias, I'd also highly recommend Anniversary and Matured Virginia No. 24. For me, the very best Virginia from McC is Dark Star, but that might be a challenge for a beginner.
Finally, I'd recommend Butera's Royal Vintage: Matured Ribbon, an excellent Virginia that virtually nobody talks about.
Bob