There are three aspects of working with text on pages:
•Linking articles to page shapes
•Editing text content on page or in Text Editor
•Working with local text on pages
Have in mind that there are just few small differences in editing text on the Articles main tab and on the Pages main tab, so whatever you've already learned about editing text as reporter or editor, it's hugely applicable to the editing of text on page.
Use the Table of Contents to find information. See also Using table of contents in help.