Although concrete5 features an auto-updater, there is also the option to manually upgrade a site to a new version through some simple steps. The video in this how-to demonstrates how to perform a manual upgrade on a typical server.
The default theme delivered with concrete5 5.7.x has a nice image slider, but on smaller screens it's title and description font sizes are not scaled down and thus cut off. Here you can see my aproach to solve this.
How to use \Concrete\Core\Html\Image class / How to get thumbnail of the image
Switch the default Google web font in the Elemental theme to another font.
How to create modal dialogs on dashboard single pages in packages.
How to add a menu item (when viewing a page)
How to add options to the pagination / How to bind a new pagination view manager
Recreate the blog and blog entry page types that come with the Elemental theme content.