techniques in playing piano/ keyboard for beginners?

Okay I can give you this much my friend, playing piano is an art and takes much practice. You need not make a choice between learning to play by ear or reading sheet music. If you focus on the basics and learn both, the will both come naturally as they go hand in hand. Honestly its better to find a teacher that you can learn from in person. I know that most people almost cringe when they hear that but it will be exponentially more benefitial than gonig based on what a random internet article says. I hope this helps!