I'm new to these forums but have been a collector of United States banknotes for many years and have been a member on other forums. I "specialize" in Maryland national and obsolete notes. A member from a different forum recommended this website for swaps and trades. I have some world currency that I've had for years that I'd like to swap for U.S. notes. Looking at the "swaps" section of the website is a bit confusing. Is there a tutorial on how to properly use that section?