Are you concerned with editing documents on a wordprocessing system, or with editing a text as a publisher will do it?
If the former: Vim: Seven habits of effective text editing
Can someone provide me useful links (URL) on Text Editing
Not really - it's usually something you learn on the job. Editing is highly skilled and not something easily learned from a website.
There are some guidelines here: Proofreading
OWL at Purdue University: Proofreading: Steps in Editing
Part of my job is to edit. What is it you need to know?
Glad to be of help