How to Say "textbook" in Spanish
The most common Spanish word for “textbook” is “libro” — use 'libro' when referring to a general book used for school or study, similar to how you would use 'book' in English..
libro
/LEE-broh//ˈli.βɾo/

Examples
Estoy leyendo un libro de historia para la clase.
I am reading a history book for the class.
Estoy leyendo un libro muy interesante.
I'm reading a very interesting book.
¿Puedes pasarme ese libro de la estantería?
Can you pass me that book from the bookshelf?
El autor publicó su primer libro el año pasado.
The author published his first book last year.
Gender of Nouns
Like most Spanish nouns ending in '-o', 'libro' is masculine. This means you always use 'el' (the) and 'un' (a/an) with it. For example, 'el libro' (the book) or 'un libro' (a book).
Using 'la' instead of 'el'
Mistake: “La libro es interesante.”
Correction: El libro es interesante. Remember, the ending '-o' is a big clue that the word is probably masculine, so it needs 'el'.
manual
mah-NWAHL/maˈnwal/

Examples
Necesito leer el manual del usuario para entender cómo funciona el programa.
I need to read the user manual to understand how the program works.
Necesito leer el manual para saber cómo instalar el televisor.
I need to read the manual to know how to install the television.
El manual de procedimientos está en la oficina del jefe.
The procedure handbook is in the boss's office.
Este es el manual de historia que usaremos en clase.
This is the history textbook we will use in class.
Gender Rule
The noun 'manual' is always masculine, even though it refers to a book you hold in your hand (which is 'la mano', feminine). Always use 'el manual' or 'un manual'.
Incorrect Gender
Mistake: “La manual de instrucciones.”
Correction: El manual de instrucciones. Remember, the noun 'manual' is masculine.
Libro vs. Manual
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