what is mean by hands on folder?

Open spring.sldprt form hands on folder.

2 Answers

It is hard to say without more context.
I'd assume it means a folder which you have access to, or is "at hand".
Are you following a tutorial or some sort?

Maybe they mean there is folder called "Hands On" accompanying the book CD, and you need to access it to open the file (spring.sldprt)!