How to create subfolders for entries? I am very new to Craft CMS and just testing out the CMS. In our old system we had 2 levels of virtual folders and I need to keep that structure. I don't see anything that would correspond to that in Craft. Is there anything that would let me create 2 levels of folders?
If you use make your section a Structure, it will allow a hierarchy of entries.

See the docs on section types to learn more about the different types of sections in Craft.