How to create this glass material?

Hey guys, Blender-baby here.

I want to learn how to create a glass material.
I have a reference to what I want to learn (This was made on blender):

Can you help me recreate this scene?

I’m mostly curious about this transparent bubbly-glass material there, but any info about this light setup would be appreciated.

You can play with the roughness value of the glass node.

Thank you so much!
Do you mind if I ask what light you are using?
Currently my spheres looks greyish… I don’t know why.