I’ve just recently started using blender and made a couple of cool projects. Right now I’m trying to import a set of balloons into another file that has a bear in it. How do I import the balloons with all of the nodes with it? Does importing the object balloons automatically mean that the nodes come with it even though they do not show? 
Have a look at append.
Press “Shift + F1” and go to your file and then into the “objects” bit and select from there.
Note the “Append” / “Link” buttons, they do as they say on the tin!