Whatever you do to the Dreamweaver screen, your changes will remain.  When you open Dreamweaver again, your screen will look the way you left it.

• Choose View from the Menu bar. The toolbars that are already visible  on the workspace will be checked.
• Click on any additional toolbars you want access to.
• Click on a check marked toolbar to deselect it.

• a panel makes available elements, such as images and snippets of code, that you can insert into your site
• an inspector changes its display to match the element, such as a section of type or an image, that you  have selected to work on.

You can rearrange the windows on the screen by grabbing the colored panel on the top or the left and dragging it to a new location.

If you want to restore a window or you can't find a window:

• Choose Window from the Menu bar. The windows that are currently visible  on the workspace will be checked.
• Click on any additional windows you want access to.
• Click on a check-marked window to deselect it.
• If you want to restore your work space to the way it looked when you first opened Dreamweaver, click on Restore All.

• by default Dreamweaver opens in design view, a WYSIWYG editor that displays your page much like it will appear in a browser window
• you can also work directly in code view to hand code or tweak the html
• you can choose to display the design and code views simultaneously.

You can also switch views with the buttons on the far left of the toolbar

The view buttons on the toolbar

Code View

Design View

Code and Design View

The HTML is in the top frame and the WYSIWYG display is in the lower frame.

As you get comfortable using Dreamweaver, you will want to arrange your toolbars and floating windows to suit the way you work.