I can use older videos that explain how blender works, because blender has been changed.

Hi when I want to learn something new in blender. I think the easiest way is often to watch a video on youtube about the topic I want to learn better in blender .but I I often have a big problem if it is a more special topic I want to learn more about I know well that there are probably really good reasons for every time you make changes in the blender. something that I think could be really nice was if there was an easily accessible way to see when addons, features and other things have been changed in blender and in what version in blender it has happened .I can give an example. I know that the wirefram function was changed in blender not so long ago. If I could easily have searched and been informed when that function had been changed in blender . I would have easily figured out which video I should watch to use the function correctly in blender. Maybe there would be features that have not been changed since the blender was first released, and therefore it would be possible for me to use almost 10 year old videos. When I Having said that, I am still away impressed with how advanced blender is in many ways.When I think that it's all made by humans who without getting paid for it have spent their time doing it. well done. As my english is not the best i have translated most of it with google translator .I apologize if it is a bad translation.