Hi Mate! First you need to learn some after effects basics and some animation principles. Then you have to move on advance techniques and tricks, Below is the channel from where you can learn advance animations, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DRI4MzCqufE.html&ab_channel=MotionDesignSchool They have many other advance level videos.
