Do any of the lessons teach verb conjugation, or do they jump right in? I didn't see it, if it was there...
There are many lessons on verb conjugation. There are three separate courses on the present tense, for example. However the lessons before these still feature different verb tenses. It's actually not a bad way to learn, as rather than learning the different tenses for each verb and then trying to remember all of them and deciding which one you need, you get used to seeing them in context and build a more natural understanding of the verbs, even if you don't know every single conjugation.