What: Evernote is a free tool that captures, stores, and organizes information, including text, photos, Web pages, and audio files. Users can also sync the data across any computers and mobile devices they use.

A premium version, costing $45 a year, includes increased upload capacity, enhanced security and other features, allowing for versatility (such as making a PDF searchable).

How: Everything in Evernote is created as a "note" that can then be organized ...