Throughout the 1970s and 1980s, popular movies like Star Wars could be enjoyed a number of ways at home, though not yet through the splendor of DVD. One way was to read a novelization (often written by the ubiquitous but quite wonderful Alan Dean Foster...).
But as a little kid, sometimes the novels were just too "grown up." So - as a kid first learning to read - your outstanding alternative was to purchase the storybook, a lavishly illustrated (and always colorful...) version of the film, made child-friendly. That's a euphemism for less gratuitous violence and no sex.
I remember reading the Star Wars storybook as a little kid, and enjoying the opening photo spread, which featured little boxed photos of all the main characters. Here, I was introduced to the idea that Han Solo was a Corellian. I had never picked up that notion before, but storybooks were great for including just such unusual information.
Storybooks usually costed around $6.95 or so in the day, and were published by all kinds of publishing houses that had acquired the licenses to popular movies, including Random House, and Simon & Schuster. Storybooks are also usually printed in large "type" to make reading easy, and are often no longer than fifty pages. As a little kid, I sure loved reading 'em.
As an adult, I enjoy the storybooks for different reasons. They often feature a plethora of outstanding (and colorful) stills from the movie in question. For instance, the Star Trek III: The Search for Spock storybook features almost sixty gorgeous photos, many full-page in size. Even better, the storybooks sometimes featured shots that you didn't remember from the movie.
The Search for Spock storybook (by Lawrence Weinberg) is again a perfect example, because it features two photos of a Klingon spy named Valkris wearing an elaborate mask/headpiece that is only glimpsed for an instant in the Leonard Nimoy film (and then only the lower portion). In the storybook, you get two bites at the apple, so-to-speak, and can view this neglected example of Klingon costume design.
Storybooks are still produced today (for films as diverse as Batman & Robin  and Star Wars Episode I: The Phantom Menace ), but more often than not they're flimsy softback products rather than the old-school hardcovers which I loved so dearly as a rug rat.
I've collected a number of storybooks over the years (including A View To A Kill, Indiana Jones and the Temple of Doom, and E.T.), and this week I'm displaying a bunch of 'em here. Unfortunately, my Dune Storybook is water damaged (pictured right). D'oh! You can see that my collection leans heavily towards films of the 1980s....my early teen years when I collected EVERYTHING.