iOS8 Day-by-Day is a blog series which dives into all the new features available for developers in iOS8. You can read more about it and find an index of the currently published posts here at shinobicontrols.com/iOS8DayByDay.
This repo is a collection of projects which accompany the series. Every single blog post has a project which demonstrates the functionality in-action, rather than just being a purely theoretical overview of the technology.
If you have any suggestions / ideas / comments please feel free to catch me on twitter at @iwantmyrealname, and do fork the repo and have a play around with the code!
sam