Layout: the communication queen
If content is king, then layout is the queen. There are many reasons why a good layout is important for a successful publication:
the first impression
The most profound content can go unnoticed if not presented clearly. Readers take notice of the quality of the content's presentation before they begin reading the first word. This first impression, provided by the layout, will set the tone for the rest of their encounter with your publication.
The layout and formatting of your book determine its user-friendliness. Just as a user may interact with technology, they will interact with your technical writing. A clean layout goes a long way to making the content as user-friendly as possible.
A professional layout builds trust. It shows readers that you care about your content enough to put some effort into presenting it professionally and beautifully.
A clean organization shows your readers that you respect their time. You want to help them learn, not cause them to hunt for clues. A well organized document helps them find their way.