I'll add my "Welcome" to the group. Regarding sunglasses, or anything bright or shiny -- stay away from it. You'd be surprised at what animals can see and pick up on. When I hunted caribou in northern Canada, the Inuit guides didn't even like to see hunters wearing red. "No wear red; caribou see red," they kept saying. These guys just might be the best hunters in the world, so maybe they're right. Unfortunately, where most of us hunt, things aren't so isolated that we can afford to NOT wear red or hunter orange. Anyway, it's required, but shiny stuff isn't!
As a new hunter, you might want to read Beyond Fair Chase by JimPosewitz. It's all about hunter ethics - short, very readable and enjoyable, and only about five bucks in paperback. (The other guys on this site are probably getting tired of hearing me recommend this book, but it's worth it.)