To get started in improving journalism for peacebuilding, there already are a lot of online resources which are easily accessible and offer a great deal of information.
United Nations Peace-building Fund
The United Nations Peace-Building Fund offers support for initiatives which are adding to peacebuilding in post-conflict zones. They specifically acknowledge the importance of journalists and encourage the improvement of journalistic conduct.
Conflict Sensitive Journalism Guide
On page 16 of the report, journalists can find a checklist with relevant ways of going about journalism in conflict/post-conflict situations which can help to facilitate peacebuilding.
https://www.mediasupport.org/wp-content/uploads/2012/11/ims-csj-handbook-2004.pdf
Hirondelle Foundation
The Hirondelle Foundation offers some useful resources for journalists in conflict/post-conflict situations.
https://www.hirondelle.org/en/our-work#what-we-do
IJF Global Ethics Charter for Journalists
The International Federation of Journalists introduced a global ethics charter for journalistic conduct which is useful to understand basic journalist conduct.
https://www.ifj.org/fileadmin/user_upload/Global_Charter_of_Ethics_EN.pdf
Conflict-Sensitive Journalism Research Conference
An event which teaches Conflict Sensitive Reporting for journalists worldwide. The website offers future events plus abstracts with information about Conflict-Sensitive Reporting.
https://www.forumzfd.de/en/conflict-sensitive-journalism-international-academic-conference