I do not have enough posts to respond to your PM, can you PM me with your email address? I wrote you a half page reply, but cannot send it.
Otherwise, you can start a post with your questions about craigslist, and I'll paste my reply in there.
Craigslist has many anti-spam features, it is a good idea to start simple, and add more things as you make progress. I've helped dozens of real estate agents with thousands of craigslist postings over the past five years.