The steering committee of the Sandwich Climate Action Coalition recommends watching the Remote Advocacy Training Webinar hosted by New Futures. It is specifically atuned to New Hampshire advocates and would be advocates.
One helpful example from the webinar: Our 400 plus New Hampshire legislators have no staff. They rely on outside information to make decisions. So your courteous, well reasoned input actually might have some weight.
Clean Energy New Hampshire has information on bills it is tracking including which it supports and which it opposes. It’s a good way to keep abreast of climate related bills in front of the legislature and legislative committees.