Mostley through the internet, there are some serious collectors out there and trading networks for bootlegs exist.. but it is often hard to get started as, as the title suggests, you need some of your own stuff to trade in the 1st place.
However some folk do sell their bootlegs on the likes of ebay etc so you can always resort to that.
Also theres alot of free stuff available through file sharing programs such as limewire,kazza etc
You can pick them up in some independant record shops, but these type of places are on the decline sadly.
I just buy mine and download them form other users mostly..


andi