UK Citizenship for EU Nationals (UKCEN) is a group providing support and advice to EU nationals applying for settled status or permanent residence in the UK, as well as British citizenship.
UKCEN supports its members with the application process for:

Permanent Residence Certification
Residence Cards for EEA family members
Children’s registration
Adult naturalisation
Settled Status and pre-Settled Status

UKCEN runs a free, anonymous online forum. There are a growing number of qualified immigration lawyers involved, who regularly answer queries from members, review the group FAQs and put together briefing documents. They include OISC authorised lawyers as well as solicitors and barristers.
The forum can be found at: forum.ukcen.com/forum/forum-information