For lightning - self hosted vs custodial nostr:npub1xnf02f60r9v0e5kty33a404dm79zr7z2eepyrk5gsq3m7pwvsz2sazlpr5 and nostr:npub1getal6ykt05fsz5nqu4uld09nfj3y3qxmv8crys4aeut53unfvlqr80nfm are great resources and leaders in the space 

Bitcoin as a treasury asset strategy for individuals and businesses

Ecash and fedimint - certainly a lot of promise but fairly advanced depending on the crowd