Question

Which of the following sentences is correctly punctuated?

I have taken notes on your book however I still have questions.

I have taken notes on your book, however I still have questions.

I have taken notes on your book; however, I still have questions.

I have taken notes on your book however; I still have questions.

Answer 1

the first is correct because I don't think that there is a need of any semicolon or comma