You have some different options here. The manual is written in sequence, and one section follows logically from another. Therefore, if you read it straight through the first time, it will make the best sense, and that’s how you will get the most from it (you can skim it easily in one evening). Reading it with your other team members will lead to a rich and rewarding discussion.
That said, each section is self-contained, and if you want to jump around looking for different reference points, that’s fine (this is definitely how you will use the manual later).