No it's a book of poems.
psalm is a book there's not any books in it
The book of Psalm is subdivided into five smaller books.
The two middle books are the 33rd and 34th books - namely Micah and Nahum
It depends on context. If you are talking about Psalm 124, you would say "Psalm 124" since it is the name of that particular poem. If you wish to reference the specific verse Psalms 124:18, then you would say "Psalms" since that is the name of the book.
The last holy book of God is Qur'an; Muslim's holy book. Before Qur'an there are God holy books of Psalm, Torah, and the Bible.
The Bible is divided into books, each book divided into chapters. Each chapter consists of verses.
If one considers each Psalm as a chapter, then the Book of Psalms has 150 chapters.
The Venite or invitatory is taken from psalm (Psalm 95). In some prayer books this psalm may be shortened.
99 - Psalm 1 - Psalm 99
One Psalm is attributed to Ethan, Psalm 89.
The rate is $2.25 per book ($18 divided by 8 books).
That's relatively easy.... look, Psalm is the largest book in the bible... and if the translation has a proportional size... you find Psalm quite in the middle of the whole bible text (just open it). If you don't get it a the first try you are certainly quite close to the book of Psalm (and to find the 91 should be easy). This is my trick - if you haven't any legend inside (where you can look up the single books).