Subscribe?

What happens when you subscribe to a post? and how do you add things to your notebook?

Sorry for the boring post but this is perplexing me. TIA

When you click the little plus sign near the forget password button on the top right you can go back to that post by going to my account and then into notebook.
I have ideas on slipper basket poems, Duet, Riviera..anything you like and ideas you are interested in...try it!!