A quick question that i keep looking around but can’t find but im trying to get the landscape to sculpt downward and not upward. how do i get it to do that. do i need to hold down a certain key while holding ctrl or is there a button that needs to be checked?
Oh okay thats weird its Ctrl + Shift, didn’t work the first time i tried. lol
CTRL + Shift and LeftMouseButton - glad you figured it out on your own in the meanwhile 
Just for info:
Take a look at the Unreal Editor Manual: Landscape Documentation
Video tutorials for all the basics and so on: CLICK!
There were a few answers regarding this topic on Answerhub too (like HERE), maybe check it out first the next time you have a question 