Finished programming my game, I am now completely lost on where to start with level design?

Hey good folks from the UE4 forums!

As a programmer I truly don’t have any experience with level design! I am currently using just BSP and materials to block out my level and flush my vision out, and so far so good! However as the title suggest I am finished with programming the systems in my game, and want to to start with level design. And that’s where the problem lies…

As someone who has worked with a large team previously, I am now completely solo and have NO EXPERIENCE with 3D modelling, texturing, etc.

What I’m asking for is if you have any resources or a good starting point to start down learning this new world of level design in UE4 that would be fantastic!