Most legal documents are still on paper. Even if they are on your computer screen, technically, they are still paper documents because you cannot edit the text. Sure, you can try to use OCR software such as ABBYY FineReader, but many times this is impossible or too time consuming as legal documents invariably have stamps, seals, handwriting and let us not forget, smudges from photocopying and then scanning the original document.
I confess that I love to scan documents and photos. I like the fact that they are all in one place, do not deteriorate over time and can be sent via e-mail or uploaded to a web site instantly. If you have a scanner, you may like to try scanning whatever legal documents you have lying around. Some examples are deeds and forms. You will also find disclaimers and other legal notices on many different types of documents.
Of course you could simply copy the text by typing it or dictating it with Dragon NaturallySpeaking, but I find that the images and colors and spacing of the text in context help me remember the words better.