Thank you very much!
There's a few ways of doing it...
For a single exposure, the idea is to take a long exposure with very little light, and a tight aperture to get everything in focus. You'll end up with a very brightly lit foreground, and a somewhat dim starry sky, depending on conditions (this can very wildly). Then you'd just use Adjustment brushes in Lightroom to control your post process exposure for the foreground and background separately, so that you can balance the exposure. But, this is a smidge tricky, as you have to fit both the stars and your foreground within your normal dynamic range. But, the post processing part is easy.
The second option is to use stacking, which shifts difficulty from getting the shot, to the post processing part (which is my weakness). With stacking, you'd take two separate exposures, one for the foreground, and one (or 20, depending on if you really want to stack) for the stars, properly exposing each, and then using post processing to merge the two results together, which could be done in Photoshop by placing one over the other, and then erasing the top layer. Personally, I would lay the "stars exposed" photo under the "foreground exposed" photo, and erase the foreground photo's stars (to allow the properly exposed stars to show through), almost purely because it would be more lenient to erase too many/too few stars, than it would be to erase too mich foreground and suddenly, say, a chunk of a rock is way too bright, etc.
Personally I suck at both stacking and at landscapes' so EH single exposure stars it is for me.