Richedit + websocket + webrtc + rest API

hello,

I’m newbie of flutter,

please can you suggest me a nice place where to find tutorials and professionals about:

  1. build a whatsapp clone
  2. richedit component with emoj
  3. dispatch a websocket client
  4. onreceive event of websocket do formattail of the richedit with the added text
  5. how to call async REST API
  6. best component for webrtc

thank you
Roberto Della Pasqua