I'm a newbie to Dreamweaver and am wanting to learn so that i can have more control over my website after using joomla templates or too long.

Hello MajikM,
Dreamweaver is a good application for What You See Is What You Get (WYSIWYG) but if you're looking to have more control over your website you should take a little time and begin to learn Valid Coding Practices by writing your own code(s).
Writing Valid Code seems scary until you realize how scary using an application is that is used to generate a webpage (in order to have control over a web one must know what it is that makes the web look as it does and do what it does).
Don't hesitate to sincerely skim, read, and peruse the bounty of information here and at some of the other resources for HTML, CSS for starters and once your confident in your skill of these move on to the next area. HTML is the root of all common webs and remember that webpage generator applications provide more than the basic necessary code for a web - they give application specific information coding as well that is not necessary for the page to function thereby creating a waste of your precious Zymic Free Ad-Free Web Hosted Account space.
One of the best ways to learn HTML Valid Coding is to generate a small basic webpage with your application and then go out to a site like W3Schools and view the online resources there for HTML knowledge and understanding while you look at your source code for that basic webpage - try to duplicate the generated basic webpage using only the neccessary HTML valid code information and once you've got the HTML down try styling the HTML page by using CSS.