Usages of online
Eu gostei da sua resposta na última reunião online.
I liked your answer in the last online meeting.
A reunião é online.
The meeting is online.
A autora do meu livro favorito virá à livraria amanhã, e meu autor favorito falará online; será uma conversa interessante.
The female author of my favorite book will come to the bookstore tomorrow, and my favorite male author will speak online; it will be an interesting talk.
Elon.io is an online learning platform
We have an entire course teaching Portuguese grammar and vocabulary.