If you want to read a short book, Starship Troopers.
He wrote a lot of great “juvenile” fiction that punches way over its weight. ‘Troopers started as one of those but was rejected by his publisher, so he had printed as an adult novel by another publisher.
If you want to read what I think is his opus, The Moon Is A Harsh Mistress.
The Moon’ will throw you some curves about relationships. Don’t let them distract you or put you off. Please stay with it for the sake of the overall message.
I found both to be fascinating reads and hard to put down. ‘Troopers I read three different times over three different decades and found something new to take away each time.
Some might suggest Stranger In A Strange Land. It was huge in the 60’s, but I don’t suggest it as the first thing from him to read. It might be more enjoyable after reading The Moon’, if you enjoy that.
Thanks so much. Had no idea he did “Stranger in a Strange Land.” My parents had a copy of that. Old hippies ; )