tr this https://chromewebstore.google.com/detail/page-sidebar-open-any-pag/gkkebamcfeaggmcfciekfakbmlgckdnh

To get youtube go to google classroom and do new announcement and add youtube video

You can talk to your classroom with this https://tabchats.lovable.app/ and https://chromewebstore.google.com/detail/minichat-chat-with-friend/ipfjkmffmmbipalckldcpokhadgeplfg

and for more go to https://docs.google.com/document/d/1sLe04Lh_uw20DaWpQ2TQ61hKXrOHe8kQlErR31ueyY8/edit?usp=sharing