It can be a steep learning curve to begin with, but if you stick at it you'll find things getting easier.
Click here for a good tutorial it's for an earlier version of Dreamweaver than the one you have, but that won't matter.
A word of advice before you begin....
Sit quietly and work out how many pages/sections your site will have, and arrange them architecturally - that is, draw a diagram a bit like a family tree, with your homepage at the top, and lines connecting it with sub-pages. Add extra pages to the sub pages as required. Remember that each time you connect one page to another it will represent a mouse click for a site visitor. The trick is to try to design a site in such a way that navigation is fast and easy - people will expect navigation to be intuitive, they don't like having to work hard to find what they want.
Once you've got an idea of site layout you can start building - it will make the job much easier. Get the layout design and site structure done first, and add text and image content later.