I never paid anything when I signed up two years ago.1- Is it free to register or there's a fee? If there's a fee, is it anually and of how much.
So far I haven't needed to update anything other than my home address when I moved.2- Once registered, do I need to renew my membership/company every once and then or I'm good for many years?
You will get a Venture One card. The Post Office employee will scan it and you are good to go. However, you have to remember that you will save more if you use the online tool to print your waybill.3- Once registered, is there anything special I need to do in order to tell them I have the Venture thing if I decide to wait in queue in a local CP office instead of going online?