The conjugation of verbs

It seems to take a lot of time that I understand

the conjugation of verbs.

I made a kind of material to learn it.

Please let me know the more useful way of learning it.

https://video.wixstatic.com/video/430245_1fbc8bb4e9de4eadaa3c11509015bc3f/480p/mp4/file.mp4