You create a home group, then share any music, or documents,ect.
with the sharing option you can setup after creating the home group.
Once done it will give you a key on the first Machine setup for home group that you have to put in the second machine to join it. after that you should have access to that computer via windows networking, buy clicking on the name of the machine. and will see a list of shared things like music or word document you can run or edit on the other computer and save back to the original shared folder, as long as you make sure the files go in the folders you are sharing across the home group, of the first computer you set up.