Before you wonder to yourself "Where do I find all the information I need about geocaching and trackable items?" you can start with the Groundspeak Knowledge Book. If you can't find what you are looking for there, and have questions, try these forums. Use the search feature, because chances are, your question has been asked and answered many times. Don't be afraid to ask. We are a very helpful community here.
A note to geocachers:
Travel bugs and trackable geocoins are not a trade ite