Personally for about a month. I inherited my father's collection.
How Large is your vinyl collection?
Around 200+ records
Which is the most valuable record in your collection?
Not sure about the value but I personally cherish the Neil Young & Crazy Horse - Rust Never Sleeps vinyl the most.
Tell us about your turntable setup.
Rega Planar 3 + Yamaha RX 3080 + Svs Ultra Towers + Svs PC 13 Ultra for music
Any advice to people that are about to start their collection?
Take the plunge, you would not regret it. Plan your record buys. Its a process, be patient however when you see a record you really really want and the budget allows for it, Do it. You do not want to regret later. Store your records immaculately and invest in a decent setup. You would not be doing justice to the records if you play them from an all-in-one, on the contrary it will only harm your records.