you have tu use conocer 
Yo no conozco los libros......
saber is more to know a language, ....saber hablar Inglès.....
hope I helped !
        
             
        
        
        
C. "Los hermanos buscan su perro y sus gatos."
        
                    
             
        
        
        
Caracas :))))))))))) sorry it needs to be 20 characters ahaha
        
                    
             
        
        
        
Aprender- to learn
escuchar- to listen
contar- to count or to tell
estudiar- to study
hablar- to talk
cocinar- to cook
pasar (tiempo con)- to spend (time with)
practicar- to practice 
deportes- sports
cantar- to sing
bailar- to dance
mirar- to look
comer- to eat
leer- to read
escribir- to write
vivir- to live
decidir- to decide
definir- to define or to determine