Settings API with arrays example

I’m using the Wrox WordPress plugin development book as a primary reference for getting started with a new plugin and I understand all settings can be saved as 1 array but the book does’t give an example of this and all the stuff I’m finding on the web seems so different from one example to another. The second half of a post by Konstantin gets me close but I’d really like to see a more complete example with multiple fields.

Possible to hide Custom Post Type UI/Menu from specific User Roles?

What I’m looking to do is completely hide the UI for a custom post type from specific user roles…Ive previously found many resources on how to disable access to using those CPTs but nothing that really allows you to completely hide the CPT UI all together based on what user is logged into the dashboard.

Responsive Theme Design: how have slideshow on desktops/tablets and static photo on mobile using same template?

I am building my first responsive WP site with my own custom WP Theme. The primary templates are part fluid, part fixed. This enabled me to create only 3 “versions”, a desktop, tablet and mobile version. All changes happen due to media queries. (Sizes are 768 to 1200 px for desktop, 530 to 767 for tablet, 300 to 529 for mobile.)