How to Open and Modify STL Files in Blender

[@theebadge]

Thanks for the great intro to blender. Is there a way to make a basic stl into a more “mathy” type file- like something where it’s a CAD surface, not a bunch of triangles? Sorry, I don’t know what the term would be.

[@Slankish1987]

my stl is greyed out or atleast the one i want to open

[@jerryhanks6718]

i have stls enabled from edit option and it wont let me open anything from my device downloads or anything what should i do