**Either video is fine**
https://www.youtube.com/watch?v=3ivSK0nTAeA
https://www.youtube.com/watch?v=59pbjYlF-B4
**Install the latest Unity version**
- Get the VRChat SDK2 (SDK3 optional)
- Find an avatar you want to use
- Login into VRChat SDK inside Unity using your VRChat account (same as ingame)
- Open .unitypackage file in Unity
- Select Unity Scene if provided in package
- Open Build Control Panel under VRChat SDK
- Click Build & Publish
- Fill in avatar information & Click Upload
- Launch VRChat and see your new Avatar!