I don't remember if we post anything concerning Yanfly about all the infos he provided to prople through his channel. If not, here's a link to his channel. You should watch his YEP series as well ^^
https://www.youtube.com/channel/UCxqti0F9VuiSWyqznaua_zA/videos
https://www.youtube.com/channel/UCxqti0F9VuiSWyqznaua_zA/videos