Hello! I see you're a newbie! (OR new enough to qualify for this)
if you're wondering: What is tbt? or what are collectibles? or how can I get some?
Well, all three of those questioned are answered here:
http://www.belltreeforums.com/showthread.php?391977-Free-Newbie-Starter-Pack-Thread-Free-TBT-amp-Collectibles-amp-Helpful-Sources!
You can even get yourself some FREE collectibles/tbt or ACNL items...just because you're new!
BTW, if you lack bells on ACNL, the conversion rate is 100 tbt=20 million ACNL bells, and the collectibles myself and a user name vel give you, will be worth up to 500 tbt! You can keep them or sell them, depending on what you want :blush:
Good luck, you'll love it here!