Riemann-Roch theorem and divisor of differential forms

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I am studying Riemann-Roch theorem but I have some difficulty understanding the concept of divisor of a differential form and the link between differential forms, their divisors and the RRT. Could you suggest some books to understand this topics! Thank you in advance!

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Check out the following sections from Otto Forster's Lectures on Riemann Surfaces:

$\S$9: Differential Forms

$\S$16: The Riemann-Roch Theorem

The latter section gives a gentle exposition of the link between differential forms and their divisors before discussing RRT. An upside of this book compared to Miranda's is the use of sheaf theoretic language, which I think is best introduced in a concrete context like the theory of Riemann surfaces.