我们不知道有任何可供购买的教程。
We aren't aware of any tutorials available for purchase.

I recommend giving a read at our blog section if you're looking for tutorials:
如果您正在寻找教程，我建议您阅读我们的博客部分：
Blog: Spine Spotlight: Jorge Bompart

There's also longer untranslated streams here:
这里还有更长的未翻译流：
Spine: Twitch

They are free! I hope this helps.
他们是免费的！ 我希望这有帮助。

We also have many videos with Chinese subtitles:
我们也有许多带有中文字幕的视频。
Spine: Videos

See these videos on bilibili:
请看这些关于bilibili的视频。
https://www.bilibili.com/video/BV1C64y1o7Zs

I know it's not exactly what you are asking about, but I hope you find it helpful.
我知道这不完全是你要问的问题，但我希望你觉得有帮助。