1.Don't take things from your friends because you want it. Make some kind a currency(though it needs to be plentiful to avoid haveing people get angry).
2.Don't take everything at the begging (before the town), people get made when there is NOTHING to add to their house.
3.Don't treat one friend better than another(again, others will get mad)
4.Don't destroyer someones house and then leave them with nothing(even if you give them everything back they still might take EVERYTHING from you in their town).
Do be aware that some people in your town may steal your ideas and use them in their town. One way that has been noted is if your friend things that a rule in your town isn't fare, they will add it to their town and then MAKE it unfare and then only enforce it on you. *not all people to this but do be aware.
different kinds of governments to have include but aren't limited to: Anarchy(no rules)~~Partial Anrchy (SOME rules)~~tyranny/dictatorship(you can do as you please and none of the rules aply to you)~~Democrocy(in my opinion:one of the worst for lego towns because you own it but someone else can run it-allso you ALL hae to vote on things)
***Please Please PLEASE remember that not ALL of what I have said above will work best for you town,just try to exparament with it***