how do I email a photo album

Albums are too large to email usually so you share via iCloud Photo Sharing. In the Album, Select the photos you want to share or there is a "select all" option. Then you select the share icon at the bottom left of the screen, then Photo Sharing, Select Shared Album from the bottom and select an existing Shared Album to add to or New Shared Album. If New, you name it and add people you want to view the Shared Album.

This shared album is independent from your original Album. Meaning changes to photos in the Album will not automatically be uploaded to the shared Album. Also, shared Album photos cannot be edited. They much be edited from the main Album and if desired reloaded to the Shared Album.

You can not - an album is just a way of organizing photos - to email the photos that are in an album open the album, select all and click on the share icon and select mail

LN

Most email services have a rather low limit for total size. For instance, GMail limits file sizes to 25MB. Each 8 megapixel photo will be about 4MB so you would be limited to email about 6 at a time give or take, whether they be the actual photos or movie. Adding the movie wrapper would actually increase size so you might get fewer photos in one of those. Linking to a cloud service like iCloud or a service like Instagram or YouTube is how most all of us provide large amounts of data to others.