Trying to build a Level based on a seeded Black & White texture. Any video tutorial suggestions?
Your question is unprecise.
From black\withe textures used as heightmap you can create landscapes, then populate them with foliage\trees using procedural materials.
For levels as levels you use randomstream rand seed etc. Using that you can reseed same level from seed and random stream.
This might be worth a read: https://answers.unrealengine.com/questions/25594/accessing-pixel-values-of-texture2d.html
Sorry, I want to place buildings and trees based on a black & white texture or maybe convert it to a weight map.
Not sure how it is now, but there was no easy way to read texture in blueprints. You would need C++ for it.