Learn Portuguese (Portugal): Quero comer uma salada no café.

In Portuguese, when you use querer (to want) with another action, the second verb stays in its full, unchanged form (the infinitive). The word comer already means "to eat", so you just put it directly after Quero without adding any extra words.

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

The word for "I" is eu, but in Portuguese, the ending of the verb tells you who is doing the action. The "-o" ending in Quero specifically means "I want". You can say Eu quero, but native speakers usually drop the eu unless they want to add emphasis.

Why does the sentence use no for "at the"?

The word no is a mandatory contraction (a blended word) of the preposition em (in/at) and the masculine word for "the", which is o. Because café is a masculine noun, we combine em + o to make no.

Can café mean both the drink and the place?

Yes! In Portuguese, café refers to both the drink (coffee) and the physical coffee shop (the café). Since the sentence uses no (at the) to talk about a location, we know it means the physical place here.