Is this you: stuck with a limited budget Html website, and want to add something new to it? The content is getting stale, is not interactive enough, and your google rankings are going down as a result. So are you now asking, can I update my own content? Well, the answer is no, not unless you have software like Dreamweaver or Frontpage, to do the editing, as well as an understanding of FTP and how and where to upload the pages. So I would suggest you best leave the editing/updating to a developer, or better still, now is the time to create a new CMS to replace your site. Then you can edit to your hearts content.
Webdesinz can update or upgrade your website to a WordPress site, so that the new algorythim being set by Google on 21st April 2015, does not send your html site to the bottom of the listing in Google directory.