The print or hard copy journals in the Law Library are generally arranged in alphabetical order.
For example, if you are looking for the 'Modern Law Review' then Library Search will tell you this journal is located in Law Journals and the shelfmark is PER 340 MOD.
This journal is located in the 'Journals M-Z' room. The Law Library's floorplan is available here: www.ncl.ac.uk/library/about/floor-plans#law
Bound journals are pre-current journals which are in 'book' form.
Current journals are journals which have recently been published and are still in 'magazine' form.
European (PER 348) and International (PER 341) law journals will be located in the European Law and International Law rooms.