Instruct: Classify a review into positive or negative sentiment.
Query: Learn nooks and crannys of the .Net Framework

If you think you know the framework, I suggest you take a look at Mr. Connell's book. He covers many undercovered areas in great detail. Isolated storage and encryption come to mind. In short, if you are looking for new material, I highly recommend this book. Its on a par with Mr. Connell's .Net Coding Techniques.