According to Osho, his books are only provisional pointers, not privileged truths; when he says 'drop all books,' it explicitly includes his own. Use them to awaken inquiry, then let them go so no word, doctrine, or authority stands between your eyes and reality. True understanding comes from direct, unmediated seeing—not from clinging to scriptures, systems, or teachers.
His books are like training wheels: use them to start, then take them off so you can see reality for yourself.