The subject should read I ordered two books on succulents
I ordered my first two books on succulents from amazon.
They are:
The Timber Press Guide to Succulent Plants of the World: A Comprehensive Reference to More than 2000 Species
Dortort, Fred; Hardcover
Succulent Flora of Southern Africa: Third Edition
Court, Doreen; Hardcover
I ordered these two because they didn't break the bank.
There are some books on succulents that cost well over a hundred dollars.