How to train with custom dataset by using the pretrained model?

[SwEngine]

Hello,
I would like to ask a few questions about this github repo.

1. What do I need to do to train using the pretrained model?
2. How can I create my own custom dataset other than Wider-Face? Is there an annotation tool you recommend that does annotation in the same format?
3. What should I do to train with the dataset I created?
4. How can I convert the model to onnx after training?

[gdiasbruno]

I have the same questions