David McQueen's "Television - A Media Student's Guide" provides a good introduction to the study af television. I discovered the book while researching for a paper on sitcoms and the book has a chapter on this as well as soap operas, game shows, documentaries and so on. McQueen also covers topics such as public service broadcasting, new technology and even a little semiotics. It's a well-written all-round book on television.
Sadly, the book focuses mainly on British television. The chapter on sitcoms for example only focuses on British sitcoms and this somewhat limits the book's usefulness, especially if you're writing about sitcoms in general (as I was). Of course, if you're British you might not agree with this.
Still, I can recommend the book to all fellow media students.