Sometimes you'll have to complete tasks that apply to various recipes in this book, or you'll run into tasks that are too generic for a specific recipe (for example, creating a REST service with the help of WCF). Besides that, some topics are very interesting, but don't really fit in the recipe format, or are only of interest to some readers (for example, using NuGet). All that info and more can be found in this appendix, as a reference.