I am learning how to advertise my site and need info on mailing lists. I have looked at a couple of them and it looks to be a long list of codes. I am unsure how to pick a list and/or if the list that I think I should pick are right. I would appreciate any help that can be offered. How am I supposed to use the mailing lists and is there any rules or regulations that I should know

I had created this list from various friends’ e-mail messages around the world, and used it pretty extensively. Ever since I discovered and switched to the new yahoo e-mail set up, I find I get a “missing info” error message when I try to use that list to send news; what am I doing wrong?