By default, Drupal does not install any type of editor for adding styling to content. The good thing about that is you get to choose which one you want to use.
The CKEditor is one of the most popular WYSIWYG editors and with version 3.6.1 the installation is a little simpler than previous versions. Here's how to do it.
1. Download the CKEditor Wrapper
Download the wrapper from http://drupal.org/project/ckeditor
On drupal.org, when you download 7.x.1.2 (or the the most current version) you are only downloading a module that creates the directory structure and prepares Drupal for the installation of the CKEditor.
2. Download CKEditor
Go to http://ckeditor.com/download and download either the .tar or .zip version of the CKEditor. Save it to your hard drive.
3. Install the Module
Click Modules >>Install new module on and upload and install the module.
4. Upload and install CKEditor 7.x
Click the browse button, find the file you want to upload, then click Install.
When you get the completion message, you can click "Enable the module", but don't enable yet. You can't enable the module until you've uploaded the CKEditor itself.
5. Use FTP or a file manger to access your sites/all/modules directory
When the CKEditor wrapper is installed you will see an additional folder called ckeditor in your sites/all/modules directory. Note that there are two ckeditor folders. There will be one at sites/all/modules/ckeditor and another at sites/all//modules/ckeditor/ckeditor. The second one will be empty except for a text file named COPY_HERE.txt.
6. Uncompress the CKEditor you downloaded, and upload it to the empty folder sites/all/modules/ckeditor/ckeditor
7. Enable the Module
Return to the Module list page on your site, and there will be a new section called User Interface. Expand it, if it's not already, and check the enabled check box. Be sure to go to the bottom of the page and Save configuration.
8. Configure the Module
After you have enabled the module you will see some additional links on the module list page.
- Permissions: this is where you well set user permissions and grant access to different user levels.
- Configure: This is where you will activate the modules features.
9. Set Permissions For Users
When you click Permissions there will be an additional section added to the list for the CKEditor. There will be a column for each user level, and putting a check in the box activates the editor for that user level. Defaults are Anonymous User - OFF, Authenticated User -OFF, Administrator-ON. Administrator will already be checked by default. You assign permissions to other users.
10. Configure the Editor
On the module list page, choose configure and you will see the Profiles and Global settings. Click edit on each of these and adjust your settings for each option.
At this point you will be done with the basic installation, but you may want to add an image finder for inserting images and links to content. That functionality is available in CKFinder, which you can add to CKEditor. Click here to read our tutorial on installing CKFinder.