The Gallery for Miva Merchant is the only module you will ever need for galleries because it can handle virtually any gallery plugin out there.
A gallery type would be the main gallery plugin, such as Unite Gallery or Featherlight. Each gallery types has styles associated with it.
These are the CSS, JS, HTML, and other settings that that control gallery display, such as tiles, sliders, and other options the gallery type supports. Each gallery type can have many different styles.
These are custom media collections that could include videos, sound, text, html, miva template code, iframe embed codes, and more. You can set up collections that are displayed with your product images, good for adding video to product galleries.
Importing a gallery and gallery styles is as easy as clicking on the blue import icon. A list of supported galleries will appear and you can import the gallery of your choice. If you know of a gallery you'd like to use, let Scot's Scripts know. Exporting is useful if you have developed some gallery styles you want to share. Contact Scot's Scripts about that as well.
Jquery: Most if not all of these galleries require jQuery. If you're store doesn't load it and you need help, go to support.