On your left side of the game is lorebook (the little window with up to 3 quests). On top of that window there's 2 buttons (2 options):
- Book Icon, which will open up an entire lorebook window where you can browse through all volumes and chapters
- Currently selected volume with a down arrow, which allows for quick switching between volumes, which will automatically open up the latest unfinished chapter/quest of the selected chapter
In case you were asking about something else, please try to rephrase your question.