There is an extensive wealth of reports available on hydrogen today. But here are a few good primers to get you started:
The IEA is a great initial starting point. Their latest report on “The Future of Hydrogen” is the best regarded report in this field, while their website has a wealth of information on projects, deployments and cost considerations: https://www.iea.org/topics/hydrogen/resources/
To see the Hydrogen value proposition for the hard to abate sectors see the Energy Transition Commission’s Mission Possible report, 2 page summary link here: