Questions & Answers about Я нажму кнопку, а ты подожди.
Why is the command подожди (wait) in the perfective aspect here?
In Russian, affirmative commands for a specific, one-time action usually use the perfective aspect. You are telling the person to complete the action of waiting while you press the button. If it were a negative command like "don't wait", you would switch to the imperfective aspect (не жди).
Why does нажму mean "I will press" instead of "I am pressing"?
нажму is a perfective verb (нажать) conjugated with present tense endings. Because perfective verbs focus on a completed result, they cannot describe an ongoing action in the present. Therefore, conjugating a perfective verb like this automatically makes it future tense.
Why use the conjunction а instead of и for "and" in this sentence?
The word а is used because there is a shift in focus between two different subjects doing two different things. "I" am doing one action (pressing), while "you" are doing another (waiting). When contrasting or switching focus between subjects like this, а is the natural choice over и.
Why does the word for button change to кнопку?
The dictionary form is кнопка, which is a feminine noun. Because the button is the direct object receiving the action of the verb нажму (I will press), it must be in the accusative case. For feminine nouns ending in -а, the ending changes to -у.