Don’t worry, we’re not going through all of the conjugations for every tense here. We have specific posts which treat each tense in more detail, including conjugations: we include links to each one in their respective sections below. This post is rather intended to provide a good overview...
Again, don't worry. All of these tenses are clearly explained in this tutorial. What sources should I use to study tenses? First, start with thisVerb Tense Tutorial. You need to know the rules well. Next, watch TV and movies in English. You should watch shows with lots of dialogue. ...