Hi, Shakti. I see you have already learned several languages, so you already know how to do it. Still, I'll provide some general tips:
Before any formal study, start by memorizing like a parrot a few useful phrases. Try your best to imitate the native recordings. For example, phrases like "Could you repeat that?", "Could you please say it slower?" and "See you next time".
1) Listen carefully. Spend some time in ear training. Start by watching Fluent Forever's Spanish pronunciation videos on YouTube. When you're a beginner, don't waste any time searching for movies on Amazon and Netflix "for listening practice". Instead, look for a teacher who speaks clearly and who you can actually understand. There are also videos in easy, slow Spanish on YouTube. I've seen students learn A LOT just with this.
2) Imitate fluent speakers. Search for "shadowing" and "chorusing" on Google. These techniques are key for getting the prosody right and not sounding too "foreign". Your teacher can help you with this by recording and sending you mp3s with key phrases you actually need, and which you can use for shadowing exercises.
3) Memorize and review. Search for "20 rules of formulating knowledge" and also install Anki. If your teacher speaks English, he can help you come up with mnemonics for the words you're memorizing. And please focus only on high-frequency words when you're a beginner, so you can develop a core vocabulary. Don't waste any time with unfrequent words. There are frequency dictionaries for this. Get yourself acquainted with the concept of SRS (Google it) for effective review.
4) Read aloud. This helps you both with confidence (which is the most important thing to appear fluent) and to find out what your pronunciation problems are. Use voice recognition software to check if what you're reading out loud is right.
....to be continued...