For October the topic for the Goodreads group Monthly Recommendations is Favorite Mysteries. I personally don’t read a lot of mysteries it’s probably my least read genre besides non-fiction books. Here are books I have enjoyed that have mysteries or have a focus on something to solve that are good for those just getting into the genre
like me.
The Mysterious Benedict Society by Trenton Lee Stewart: It is such a fun mystery following gifted children that all work together to solve puzzles and infiltrate mysterious academies.
The Series of Unfortunate Events by Lemony Snicket: Ahhh the horror and the mystery. I think this is a pretty obvious one but I really enjoyed trying to figure out the Baudelaire’s fate, Count Olaf, VFD, etc.
Smoke Screen by Dick Francis: Dick Francis is another pretty famous mystery writer. These books are really short fun and easy to get into. Bonus you don’t figure out the murderer on the first page they are introduced!
Miss Marple series by Agatha Christie: Agatha Christie is a must for any mystery but my favorite is Miss Marple, the unseemly old woman who is always in the right place at the right time. Definitely some of the funniest mysteries.
The Westing Game by Ellen Raskin: I LOVED this book and mystery! Everyone in
an apartment building is teamed up to solve the will of an old millionaire to receive inheritance. Everyone has their own secrets it’s such a fun read.
Girl on the Train by Paula Hawkins: I know this isn’t the world’s greatest mystery but it’s great for beginners like me and has a really cool unreliable narrator and mostly unlikable characters that you can still root for.
The Body Farm by Patricia Cornwell: Probably the most obvious and gruesome of the bunch. Probably best not to going in knowing too much but compelling and has multiple layers of mystery. 
Pretend adult here 