Assume that a user has a PDF of your book or Skeet's book. Think of using the Nutshell and In Depth (Skeet) books as help files by linking context help (F1) in LINQPad to topics in the PDF books. If manipulating the PDF is too difficult you could load the clipboard with the appropriate page number for the topic; the user could paste the page number in the upper left box of acrobat or PDF reader is used. I like LINQPad and I have the super-duper-expensive version but I use LINQPad as a C# and NET learning tool for my programs and rarely use LINQ per se.