Learn Spanish (Latin America): Compramos las revistas y las llevamos al hotel. - We buy the magazines and take them to the hotel.

They actually do two different jobs here! In las revistas, las is the definite article meaning "the" (feminine plural). In las llevamos, las is a direct object pronoun meaning "them". They look identical, but you can tell them apart because the first is followed by a noun, and the second is placed before a verb.

Why is las placed right before llevamos?

In English, we put the object pronoun after the verb ("take them"). But in Spanish, direct object pronouns like las usually go before the conjugated verb. So, the second half of the sentence is literally structured as "and them we take".

If we were taking books instead of magazines, would we still use las?

No, you would use los. Direct object pronouns must match the gender and number of the noun they replace. Because las revistas (the magazines) is feminine and plural, we use las. If you were talking about los libros (the books), which is masculine and plural, you would change it to los llevamos.

Where is the word for "we" in this sentence?

It is built right into the verbs! Both compramos (we buy) and llevamos (we take) end in -amos, which tells us the subject is nosotros (we). In Spanish, you usually drop the subject pronoun because the verb ending already makes it clear who is doing the action.