Welcome to the community, and as already stated - 'sorry about your wallet'. I joined Head-Fi some 3 years ago, and here I am many hundreds of hours on site, thousands of dollars poorer, but millions of decibels richer. I've been down many of the audio 'roads' that you are about to embark on, having enjoyed every sonic minute. Never thought that one could nor should spend more than $50 on a pair of headphones, then came the $100 limit, then the unimaginable $500 benchmark, and here I am now a few grand into my current setup and sonic bliss! I still enjoy my many dynamic setups including the orthos LCD-2's that you are currently enjoying, and am still mesmerized with my AKG K-1000's. Currently I'm an avid electrostatic junkie, and am now listening to a pair of Sennheiser HE 60's (Baby Orpheus) powered by a Cavalli eXStatA Hybrid amp.
Keep reading the threads here as they're loaded with information. And you'll find that the members are extremely helpful and will go out of their way to provide advice and assistance. In terms of purchasing 'new' equipment, I have generally stuck to the Head-Fi or Audigon forums as I know that the members are trustworthy, honest and fair.
Try to get out to some Headphone Meets if you can - a great way to try out equipment, make new 'audio' friends and share your interest.
Have fun on your journey my friend.