Hello, after a long pause with webdesign because of studying I'm back.

My experiences is basically only doing websites in dreamweaver, HTML & CSS.

I wanna start doing freelance webdesign and start my own little company.
The clients at 95% want to be able to update their websites so therefor I need to learn Wordpress right?

I don't know where to start reading and how I can become good at doing websites with wordpress for clients with their own needs and designs?
When you work with wordpress do you still use dreamweaver?