Modern Geek
Must have module for Drupal: CKeditor

To anyone just starting to use Drupal.  One of the first modules you must get is CKeditor.  It was previously titled FCKeditor, which thankfully they changed, because it’s title often looked a lot like a certain 4 letter swear word.

CKeditor is WYSIWYG text editor that will automatically convert your text to HTML. It has many buttons and commands that are similar to Microsoft Word or any other word processor. It lets you do some basic formatting with your text and is simple to use.

Of course, if you need to edit the HTML code, you can quickly switch to the HTML source and update it that way as well.  But, obviously, it will save you a great amount of time with basic formatting of text.

So definitely add this to your Drupal installation as one of your first add on modules.  To download the module and find more information, refer here to the drupal.org site