Find books and ebooks by searching Summon, and then Refine Your Search by selecting the Content Type filter Book / eBook on the left sidebar.
For Books: Narrow the results to print books by selecting Library Location: 'New York'
For ebooks: Narrow the results to ebooks by selecting Full Text Online

Once you have found the item you are interested note the classification number (call number). This is where the book sits on the shelves. Ask a library staff member if you need any help locating an item.