Dreamweaver is a tool to create websites. So the first thing you have to do is define a site. This helps Dreamweaver to organize the files used in this site.
Step 1 : Create a folder on your hard disk and name it. You can copy in a few images or files if you want.
Step 2 : Click on Site>Manage Sites>New. The following window will appear where you can enter the site details under the category Local Info.
Site Name - Type in your site name here
Local Root Folder - This is where all the files for the site are stored, the one which you created earlier. Browse for this folder and click on select.
Refresh local file list automatically - It's good to keep this option checked so that any new images or files added to your site will be refreshed automatically and you can access it.
HTTP Address - Enter your site url here so that Dreamweaver can check your links
Enable Cache - This will be default checked. Next click OK. Another screen will be displayed with your site name in the list. Click done.
Step 3 : Now Dreamweaver displays the folder contents in the Files panel on the right side. The files are well organized now and Dreamweaver knows where to search for files. Now you are ready to start developing web pages.