This guide shows you how you easily can convert your obsolete MVC gadgets to Component without being a dojo guru. With or without MVC pattern.
2 min reading how you can customize and override the CSS in Episerver UI admin with help of module system.
Nice Episerver addon that adds menu items to the QuickNavigationMenu when logged in on public site, link to admin, link to ContentType, and logout.
Finally an AddOn for opening your page in forms edit view instead of on-page edit view.