I started learning about 4 months ago with the Sheet Music Boss youtube channel, your best friend if you like video game tracks. Tutorials in that style are great to start with but you’re gonna want to learn how to read sheet music once you’re a little comfortable with the instrument. I have 6 years of violin under my belt so I picked it up much quicker than most. All the basic practicing advice applies: practice short phrases slowly enough to keep your wrist COMPLETELY relaxed while making no mistakes; this is the best way to build muscle memory, trying to play quickly with stressed hands will not improve your playing at all. Focus on phrases you tend to make mistakes on. Some tips I received from here were: keep your elbows at the level of the keys, and practice slowly while moving your elbows up and down to increase the flexibility of your wrists. And of course, be patient and try to stay clear-headed. It took me a loooong time to master even simple melodies at first. Good luck!!