It's all about learning trees. My best luck has been north/south/east facing hills, preferably along the bottoms next to rivers and creeks in mostly pure poplar stands. The poplars I'm talking about are Tulip Poplars (or Tulip Trees, etc.) and are very common and easily identified.
Other trees to look for are Ash, which look very much like Poplars except for the leaves, and dead/dying Elms. Elms work wonders for morel hunters in the midwest, with some having pounds and pounds growing under and around a single tree. While not as common (at least in my experience) in Virginia, there are still Elms here and there, and I was lucky enough to come across 2 standing dead ones a few years ago that had lots of big beautiful blonde morels under them. Unfortunately I only got to pick there once as the property was sold later that year.
Anyway, another tree to look out for is the Redbud tree. They're common in suburban yards as ornamentals, but also grow wild (at least further west). They're easily identified in spring by the bright purplish/pinkish color of their buds, and when you see this it's a good indicator that morels in that area are up or on their way up. I haven't seen morels growing specifically around Redbuds, they're only used as an indicator for the season. Another indicator is the Tulip Poplar I mentioned. When their leaves are about the size of a quarter it's typically prime morel season. Living in the foothills of the Blue Ridge, I can look at a mountainside and when I see that bright yellow/green of young poplar leaves streaking across it, I know it's time.
Feel free to ask if you have any questions, and Happy Hunting!