?. coming in C# 6 makes handling Nulls just a tiny bit easier.
The first of a series of technical tutorials on lambda expressions by Jeremy Bytes; this one in particular recreates an async/event programming pattern using lambdas while exhibiting type inference and captured variables (a.k.a. "closures") implementations in C#.
Interesting post on "clever" micro-optimizations (or how an extra branch comparison is simply unacceptable).
A detailed post on how much of the future of C# is dictated by its less-known cousin, F# (or how those features for which you are waiting, already exists).
The .NET framework offers you three different classes to consume REST APIs: HttpWebRequest, WebClient, HttpClient. To worsen your analysis paralysis the open-source community created yet another library called RestSharp. Wondering what to use?