After signing up for a free account, you can start a new blog by clicking "Create New Site." You begin by creating a sub-domain, a title, author bio, and description for your new blog. The next step is to choose a notebook in your Evernote account to associate with your new website. By default, Postach.io creates a notebook entitled "Postach.io," but you can choose any notebook you desire. Notes within this notebook become blog posts when the tag "published" is added to the note. Finally, you can link various social accounts with Postach.io, enter a Google Analytics code, use Disqus for comments, identify if you want to use Markdown or not, and choose a theme for you blog.
Now your website is ready to go. Simply create notes within the notebook you chose and tag them "published" and they will appear on your site. Pretty much anything you can include in an Evernote note can be published on your blog. There are differences between the web, mobile, and desktop versions of Evernote, so you may find certain tasks and editing are easier on one platform compared to the other.
With so many tools out there, I try to consolidate as much as possible. While the blogging platform is simple, it gets the job done for me and makes my Evernote account that much more useful. If you have an Evernote account and have not started blogging, Postach.io may be the tool that gets you started.