Future perfect
- To say that something will be finished before a particular time in the future.
Future continuos
- An activity which is in progress in the future at a future point in time.
Future perfect continuos
- To talk about the duration of an activity which started in the past and extends to a future point in the time.
It was easy to understand the ideas so it was clear for me the differences between these tenses. It was the first time that I understand the tenses without any other explanation.