Usable Usability: Simple Steps for Making Stuff Better

Slow to start, and then I began enjoying the easy to digest advice and anecdotes about a third of the way through. I would like more practical advice on applying usability research. While the advice seems like common sense - then why doesn't my cell phones company accept my credit card with their new website redesign?!? I have no idea, and no error messages, MetroPCS probably needs this book.