I'm attending a course using some material similar to a textbook, with a different approach compared to common lessons, focusing on sentences, but I'm still in the early stage.
The verb part is still the basic too, with dictionary form, ます form, past, て form and passive form so far. Causative and other tenses and/or conjugations are being used eventually to make us get used to them but they are for the near future.
Grammar stuff I try to learn for myself since there are a lot of details like that I'm asking for help here.
Well, anyway, thanks a lot for your response. It helped very much!