Focus on good not perfect or accurate. Accuracy and perfection are illusions in this field.
Realize that you'll probably never stop wanting more. Most audiophiles are never done building their "perfect systems." It can become an obsession and sometimes you have to step back and change your focus from the gear to music, or learning, or experimenting. It's generally a healthy obsession but it can be frustrating at times. Be prepared to walk away and do something else if it becomes more stressful than fun. When you find out your room is as big a factor as your speakers you might get depressed. It's okay. You'll almost certainly get over it.
It's subjective. There's no right or wrong. If you like something, that's probably all that really matters.
If you want simple hardware advice - start with speakers, and don't be afraid to buy used equipment from anywhere that you can audition it first.