[basdp]

You have been working with something for 3 months and you think you are proficient enough to warrant writing a book about it?

[silvaben]

Yes, I have shipped a production ready application that uses Vue.js extensively.

Also, this book is an attempt to cement my own understanding of Vue. I don't think there is anything wrong with that.

[basdp]

Well, if you are making clear that you are just a little bit less unexperienced as the target audience, there is nothing wrong... But if you are going to charge money...