Re: roadblock and relations
Could you please edit the subject line of this posting to something like "May spoilers rules questions"? "Roadblocks" are a spoiler for people who haven't got that far yet.
When you create a character (use it for the first time) you create a Relationship between it and an existing character. However, there is a way the new character can get a second Relationship: immediately create a second new character and give it a relationship with the first.
Yes, setting up roadblocks costs an action. But note that you can set up any number of roadblocks around your city for that one action - they don't cost one action each.