I'm new at blender and am trying to make the cube look like glass. I'm not sure how to not make it look like a mirror and have this weird texture reflection. The monkey is a better picture with what is going on. It's leaving a reflection of a forest.
No need to overcomplicate things.
Here is how you do it:
Solution 01 (physically accurate)
Use Principled BSDF shader
- Leave everything as is (very important)
- Set Transmission to 1
- Set Roughness as desired
Boom, you have realistic glass.
Solution 02 (old, not physically accurate)
Use Glass BSDF
- Set roughness as desired
If you're going for realism, use Principled BSDF wherever you can. It solves many issues for you such as fresnel, light fall-off, etc…
BlenderGuru explains all of it’s nodes.