Many cases, statutes and other primary legal materials are now on-line. You can search parliamentary debates or congressional records in several jurisdictions. Some courts have their daily lists on-line. There are also on-line dictionaries and other general references. You can order law books on-line from the major publishers.
Information is usually available more quickly and cheaply than in other formats.
For example, decisions of leading courts are available the day they are handed down. Most of the information is free. The internet is becoming a standard way of distributing software. For example, if you install a printer or other hardware item, you can check its manufacturer's site for the latest software to support it. There are sophisticated search engines and other tools to help you through the maze.