Changes

'''Thunderbird is self-supported by its user community. We need you, and welcome you to give back to the community.''' No prior experience is needed in most cases to help with:

* [https://support.mozilla.org/questions/thunderbird Thunderbird Support on SUMOquestions] - Visit [https://support.mozilla.org/questions/thunderbird Thunderbird support forum] where you can answer questions from users' issues which "need attention" . (and issues with other statuses). support.mozilla.org (aka SUMO) is where Thunderbird users are supported by the community.)* [https://support.mozilla.org/products/thunderbird/ Thunderbird Knowledge Base on SUMO] - Visit [https://support.mozilla.org/products/thunderbird/ the Knowledge Base (aka KB)] where you can help improve documentation which users refer to for assistance.