I am 3 years new to this hobby after 25 years with different life priorities. What I have learned is that others know better than me and I need to learn from them. My advice would be to:
1- Have clear idea what you want to accomplish within you means or budget.
2- Patience! Don’t buy gear on a whim or because it’s a good deal
3- Do your homework and it takes an effort by following reviews, forums, talking to sellers, attending shows however you like. It takes time an effort not just $.
4- Price does not mean better in all cases.
5- Buy used to limit your trade up losses until you really understand what exactly you want.
6- Don’t dismiss or underestimate how much of impact tweaks make to SQ. Have an open mind and experiment on “your” system. Tweaking can reduce gear chasing and save big $’s.
7- Listen to advice with an open mind and validate it by making sure others agree and not one recommendation. If many like it then it is usually a winner.
8- Thank people and show appreciation for others time and expertise. Pay it forward to others. We can all learn no matter the level of your system.
9- Stop trolling and feeding the trollers. It ruins the enjoyment when people are critical and attack others just to get a rise.
10- The music comes first and sound quality should follow.
Take it or leave it just my take on this great hobby to be shared.