The present tense is used in Spanish:
* to describe an action happening now. Often, it is translated with the -ing form in English.
Ahora veo a Ana – Now I see Ana
Luis llega a la puerta – Louis is arriving at the gate
* to express actions that takes place regularly, in a habitual way, although the actions may not be occurring in the present. Expressions of time and other adverbs are often used to indicate that these actions take place routinely in the present.
Normalmente, compro las frutas en el supermercado – usually, I buy fruit at the supermarket
* to describe events that will take place in the near future. A reference to the future may appearin the context or sentence.
Mañana discuto el plan con ustedes en la reunión – tomorrow, I will discuss the plan at the meeting
Este verano viajo a Alemania – I will travel to Germany this summer
* to ask questions, specially questions requesting permission or someone’s opinion or preference.
¿Bebes café o té? – do you drink coffee or tea?
¿Abro la puerta? – shall I open the door?
¿Compramos la casa? – do we buy the house?
PS: keep in mind that the auxiliar verb “Do” in English is not translated. In Spanish, am auxiliary verb is not needed to ask a question.