You're looking at an OCR (Optical Character Recognition) program. I've used several online services recently,
NewOCR being the most successful for tables as of late, though there are standalone programs that would be more useful for larger documents.
Generally, finding a PDF of your textbook online would be the best option. It's usually possible to find them for sale from Amazon and other retailers, but my luck has been fairly poor as of late trying to find digital versions of textbooks I've used.