In the link Jenny.
1.So, let's say you've already finished the creation or edition of a text document (if you have any doubts about basic document creation end editing you can visit our previous tutorial) and you want to save it to your folders either for later edition, reading or sending it via e-mail, all you have to do is to go to File → Save.
2.There are two other saving options: Save As... and Save Copy... Both of them will take you to an explorer like dialog, here you can browse to the folder where you want to store the new format or copy of the document .
3.These two options are pretty much the same but there is a fundamental difference, Save As... opens a dialog box to save the open document but changing its name, file type, or both closing the old and opening the new for edition, and Save Copy... works pretty much like "Save As...", with the difference that you can continue editing the document under its original name. This kind of saving is extremely handy when you need to save partial or incremental backups of your text/document at different composition points.