Usages of a sebenta
Caso precises da sebenta, havias de comprá-la com antecedência.
In case you need the course pack, you ought to buy it in advance.
Eu havia de resumir a sebenta este fim de semana.
I ought to summarize the course pack this weekend.
Elon.io is an online learning platform
We have an entire course teaching Portuguese (Portugal) grammar and vocabulary.