WordPress at its core is a Content Management System (CMS). This mean you can manage the content yourself.
Overall WordPress has an administrative interface that you can log into that will allow you to change any content you would like. It is a powerful tool and with some basic training can be used self manage your website.
We can be there and fill in anytime you need. In most cases we will be there to setup initial design and image manipulation, then provide clear training and documentation and lastly there for 2nd tier support if you need some help.