The first and fourth pictures show very minor die breaks. These are incredibly common, and not worth any premium. I'm not sure what you think you are seeing in the second and third.
Hi Jesse, I do not see any thing other than some mechanical doubling ( no value ) on the date and mint mark, but nothing worth while. It would help much if in the future you mention where you notice something as we just have photos and you have it in your hand. As for learning about such here are a couple of Knowledgeable resources. http://www.lincolncentresource.com/ https://coppercoins.com/ especially the left column , upper with their lists of varieties and a search engine. Jim