Richard Vobes has done a lot recently about common law/natural law. Personally I’m a bit sceptical about it. I can’t think of one court case that’s ever been successfully won using common law. Being sceptical again, I would say this is because the law is set by those with the most weapons and biggest police/military.
However, I found this interview with Stan McDonald to be quite interesting. It’s about the burden of tax and whether we should pay these impositions if they are not even legal. The interview is about an hour long, and is well worth a listen if you have an interest in common law issues.