adventurous funny lighthearted mysterious medium-paced
Plot or Character Driven: Character
Strong character development: No
Loveable characters: Yes
Diverse cast of characters: No
Flaws of characters a main focus: Yes

The title says it all: A Trilogy in Four Parts.
adventurous funny mysterious fast-paced
Plot or Character Driven: A mix
Strong character development: No
Loveable characters: No
Diverse cast of characters: No
Flaws of characters a main focus: Complicated

Ratings for each separate book:
The Hitchhiker's Guide to the Galaxy: 4⭐, a classic tomfoolery adventure
The Restaurant at the End of the Universe: 3⭐, imo a bit funnier but I hate Zaphod's guts
Life, the Universe and Everything: 3⭐, lost me a bit in the start with the robots but I loved the part where Arthur gets confronted by the person he consistently keeps killing by accident, that was really funny
So Long and Thanks for All the Fish: ⭐4, my personal favourite but I missed Ford a bit, it was the easiest book for my brain to keep up with. 

Fun to read every other sentence. He plays with words and ideas. But I think it can be best summed up with its own last words: "There was a point to this story, but it has temporarily escaped the chronicler's mind."
adventurous funny lighthearted fast-paced
Plot or Character Driven: Character
Strong character development: Complicated
Loveable characters: Complicated
Diverse cast of characters: Yes
Flaws of characters a main focus: No

Douglas Adams really knew where his towel was.
adventurous funny
adventurous funny lighthearted medium-paced
Plot or Character Driven: A mix
Strong character development: Yes
Loveable characters: No
Diverse cast of characters: Yes
Flaws of characters a main focus: N/A
adventurous funny lighthearted relaxing medium-paced
Plot or Character Driven: A mix
Strong character development: Complicated
Loveable characters: Yes
Diverse cast of characters: Yes
Flaws of characters a main focus: No

I know everyone gives this book four or five stars and I know how iconic it is in the canon of contemporary fiction, but I have to say that my experience of it was disappointing. Don't misunderstand me, I love Douglas Adams' sense of humour and his crazy, inexhaustible imagination as much as the next person, but this book became exasperating at times. The tangentiality of it infuriated me to the point of wanting to scream or rip the pages out (which I would never do to any book), but still the desire was there. I do understand why it's so well loved by others though and I give Adams 5/5 for his wit, humour and being able to sustain such a bizarre story for 590 pages, but at least half of those pages were unnecessary.