So you would like to edit some existing content on your website. In Drupal this is super easy to do.
1. Locate the content that you would like to edit and click on the EDIT tab
2. On the edit screen locate the content that you would like to update. Most content is stored within the BODY field, but depending on which content type you are updating there might be more fields available (date field, location field, etc.) Bottom line is that all text edits are done in the same way.
3. You can make edits directly to the text, much like you would do in a WORD document. Change text, delete text, add new text, and format your text all within the content field.
4. Once you have finished making your updates scroll down to the bottom on the webpage and click the SAVE button. Presto, your edits have been made!