Usually the best way to learn any kind of dance is going to be through personal instruction, during which a dance teacher can not only show you the right moves up-close, but also give you direct feedback while you dance.
Prom Hairstyles: At Prom Hairstyles, you won't see a flip book, or slideshow of images, and while that does have it's drawbacks, you will be able to take an up-close and personal look at the images you like.
Keep in mind that smaller ships will give you a more up-close, arguably more active, look at Alaska, but may cost more than a cruise on a major cruise line.
If you're the adventurous type, you may want to get off the ship for some up-close looks and hands-on experiences in the beauty and wilderness of Alaska.
Reading glasses that light up can be incredibly convenient for those who do a variety of activities that require bright, up-close, light.