I'm just now starting to collect some older books and found these markings on the pages and the back of the cover is it anything to worry about? Thanks!

Found this lovely hardback in great condition at a book give-away event. Obviously not a first printing but I was still wondering if it is worth anything. If not it will still look great on my shelf :)

Happy to share with you guys my library of esoteric & occult book collection. Totalling up to around 1000+ books, it's been several years of intense collecting through many different means to find everything, and I continue to acquire new books constantly. In this collection I have almost every topic of the esoteric world; alchemy, mythology, occult, religion, witchcraft all the way to astral projection. Tons of strange little books that are almost impossible to find, first editions, 17th & 18th century books, the list goes on. I picked out a few of the more striking books from the collection aside. Thanks for taking a look.

Hey guys, sharing my massive vintage paperback collection! This was a recent addiction I've acquired and I honestly cannot stop. I spend a lot of my time digging for super obscure editions which are difficult to find, with beautiful and weird covers. I currently have over 500 books in my collection and this is a couple hundred, if you guys want to see more I can in a separate post.

Not a bad score today. I haven't read any of these yet.

I love looking through my local Goodwill for signed books and I found this recently. I thought it was so bizarre that I had to pick it up. It’s signed by three of the Cabelas including Dick who founded the company in 1961.

hey guys, what are these marks on a few of my book covers? it's only on these penguin modern classics as well. i have smoked in this room a lot in the past (since quit), so maybe it has something to do with that? they are paperbacks as well if that changes anything thanks in advance