There are two ways to use it: access Pika through the official website or Discord. Official website address: https://pika.art/ Of course, you need a decent VPN/proxy to open the official website.
1. Official website
The moderator has provided a detailed explanation of the feature panel for everyone; it is very simple. You can create based on the image guide.
2. For Discord, you need to download it, then search for Pika in the channels and join.
Then use the command format `/create keyword parameters` to control video generation.
To modify a video, you need to click the image feature to upload.