Language Integrated Query feature is one of most popular C# language feature. LINQ embeds querying capabilities into C# language. LINQ offers expressiveness, static type checking and support for multiple data sources. Every C# programmer knows it and loves it to the core. LINQ offers ton of methods, extensions and options. Sometimes, it may feel LINQ is vast and advanced and very few people know inside out of LINQ. Regardless, total knowledge of LINQ querying is considered a valuable skill to have. It helps write efficient LINQ queries and in the end, better performing programs.
Check this out – full training video series on LINQ capabilities, features. Apparently, this is not a beginner oriented and it has stuff for advanced developers,