Hey
First, welcome here!
It seems you didn't get some information, so please have a look first
to this thread, and read the link you will find in the first post about our Single Player forum trading rules - that include the giveaways ;-)
Also, if that's just about the stash, you may be interested in GoMule to handle this (see FAM/Forum Authorised Mods, you'll find everything in the link I suggested you to read beforehand).
If you have more specific questions, you can send a PM to a moderator, like
@maxicek for example.
That being said... when you're set, I can be in for some HC trading ;-)