Please start by watching our video  “Reviewing” and looking into our review form. The program chair highly recommends reading Mistakes reviewers make (by professor Niklas Elmqvist), see https://sites.umiacs.umd.edu/elm/2016/02/01/mistakes-reviewers-make/ It provides a very balanced view on reviewing that applies to AI and its subfields. (One little detail: when Elmqvist writes about user study (coming from an HCI perspective), you might want to think of experiment (in AI or ML).) The program chair also highly recommends going through the slides that Hendrik Blockeel and Jesse Davis used for a tutorial on reviewing, and that they have kindly adapted   for IJCAI-ECAI 2022. https://dtai.cs.kuleuven.be/introduction-to-reviewing-for-ijcai.pdf