Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Invaluable, indispensable

This is an excellent book for anyone thinking about starting a business in PA. This is a resource you will turn to over and over again during the entire process of opening and running your business. All the laws involved in business can seem overwhelming, but this book puts everything in plain language. It also gives you information on where you can turn for more information, with names of offices and departments, phone numbers, fax numbers, addresses, web pages, and email addresses. I didn't find a single thing it didn't cover, including laws regarding home businesses and an entire chapter on internet business! You can't go wrong with this book. Good luck!