new to ST in general... actually new to ARM
For the examples use (File->Import General>Existing projects into workspace) as you already have tried.
The Import from ST Cube documentation works if you generate the project from CubeMX but the examples are not CubeMX generated.
It is a little tricky when you do this for the first time with Eclipse, but after you know how to do it is not so complicated.
I have the board that you mention and I can make few screen shots to help you to start with example project. I just receive the board 3 days ago so I did not have time to load something on this board - so I will try this example for the first time.
I will try to do the screen shots until tomorrow afternoon (but I don't promise you).