Series
The The Hitchhiker's Guide to the Galaxy series has 5 books.
Published between 1979 and 1991. The publication order differs from the reading order — both are below.
Arthur Dent continues his improbable journey through space, now in search of a decent meal at the titular restaurant. Douglas Adams's signature blend of absurdist humor and philosophical satire skewers everything from religion to bureaucracy while hurtling through the cosmos on pure randomness.
The Books Oracle — track the series you are partway through, and see what to read next.