Welcome H4b & H4e,
In this wikiwijs we will be talking about the Present Perfect & Past Simple because these tenses often get confused with one another. As you already know, we use both of these tenses to talk about a situation in the past. But when? and how? Now that is the question!
You will also find different types of exercises here which best suits your level. In addition, there is an explanation video and some extra online videos.
I hope you find this a great learning experience :)
Good luck!