What is causing these glitches so I can move on?

Hello!

I am brand spankin’ new to this software. I have several issues going on in this screen shot and I can’t move foward in my tutuorial until I get them resolved. Any chance that someone on here has some insight:

  1. I have two landscape layers here. My original landscape layer material is showing through my painted grass on the second landscape layer.
  2. Any static mesh I place, no matter where I place it in the map, sits in one specific spot. In the screen shot there are three different items sitting on top of each other (a character, a tree and a rock).
  3. I cannot seem to move any of these static meshes with the select/translate tool. Literally nothing happens when I click on an axis and move the mouse around.

  1. Delete one of these

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2 and 3. Check you haven’t got the snap to grid on a ridiculous level

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