Differences in Plot and Characters: The TV series diverges from the books in terms of plot details, character development, and relationships. Some characters who play important roles in the books have minor or non-existent roles in the TV series, and vice versa. The overall storylines also vary, so you can expect surprises if you read the books after watching the show.
Expanded World: The books provide a more in-depth exploration of the vampire world and its history, including the original vampire mythology and the relationships between different vampire factions. You'll learn more about the origins of the vampires, their powers, and their weaknesses.
Character Insights: The books offer a deeper look into the thoughts, motivations, and conflicts of the characters. You can gain a better understanding of their emotions and experiences, which can enhance your appreciation for their actions in the TV series.
Nostalgic Factor: If you enjoyed the TV series and want to immerse yourself further in the world of The Vampire Diaries, reading the books can be a nostalgic experience. It allows you to revisit the characters and revisit their stories from a different perspective.
Style and Tone: The writing style and tone of the books differ from the TV series. The books have a more literary and descriptive style, while the TV series often focuses on action and suspense.
Ultimately, whether or not it is worth reading the books of The Vampire Diaries after watching the TV series is a personal choice. If you are interested in exploring more of the vampire world, gaining deeper insights into the characters, and experiencing the original story, then the books can provide a rewarding reading experience. However, if you are primarily interested in the fast-paced, action-packed narrative of the TV series, you may find the books to be a bit slower-paced or lacking in some of the dramatic elements of the show.