in my opinion reading books, or even just dome short writing in Spanish can go a long way. Every time you come across a word you dont know look it up, or ask and write it down. Even try writing a sentence along with the definition of the word.
Answer:
-Esta pelicula no es interesante. Nosotras ___la vemos_____ un poco ______aburrida______.
Explanation:
Do you mean Deccoloras El polo. If so, then it means "with what do you bleach your hair"