Hey man welcome to the sport!
Best advice I can give you is KISS (Keep It Simple Stupid for those who'll miss that and think it was a typo Lol)
People are going to drum into your head all these things you should be doing, shouldn't be doing, reasons as to why you should X, Y, and Z. So I am just going to post the most important and overlooked aspect of powerlifting...
You have to keep it simple and have to keep it fun. This is a sport that can be daunting at times, and flat out suck at others; but that is nothing to be afraid of. You just have to remember to find out what works and what works for you and stick to them.
There is no one way to skin a cat, and just the same there is no one way to be a great powerlifter.
You got guys like Louie Simmons and Matt Wenning who believe conjugate method for life.
Than there's guys like Casey Williams and Clint Darden (strongman) who use 5/3/1
Than there's guys like Chris Duffin and Dan Green who just say screw it and do their own thing
The point I am trying to make is that since there is no one way to build a powerlifter, you might as figure out what kind of programming you like than pick that and run with it.
If you like doing mostly high reps and peaking over long periods of time, look into George Leeman
If you like doing increasingly more sets, all at equal level of intensity. Look into Dan Green or Sheiko.
If you like bare bones work, heavy and fast doubles, and minimal assistance work with a twist, look into Chris Duffin.
Want to make weekly? Look up the conjugate system or any of their big followers for learning to apply it.
But good luck man, have fun with it, keep and open mind, and take no shit when people overstep.